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The New Quantum Era - innovation in quantum computing, science and technology
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The New Quantum Era - innovation in quantum computing, science and technology

Author: Sebastian Hassinger

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Your host, Sebastian Hassinger, interviews brilliant research scientists, software developers, engineers and others actively exploring the possibilities of our new quantum era. We will cover topics in quantum computing, networking and sensing, focusing on hardware, algorithms and general theory. The show aims for accessibility - Sebastian is not a physicist - and we'll try to provide context for the terminology and glimpses at the fascinating history of this new field as it evolves in real time.
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Revolutionary Quantum Engineering with David Reilly and Tom OhkiHave you ever wondered what it takes to build computing systems that work at temperatures colder than outer space? David Reilly and Tom Ohki are tackling this exact challenge, leading a "special ops" team of engineers from their unique position at Emergence Quantum—the startup born from Microsoft's Station Q program. They're not just building quantum computers; they're creating the entire infrastructure ecosystem that will make scalable quantum computing possible.Episode SummaryThis episode explores how quantum computing's most challenging engineering problems are being solved from the ground up. David Reilly (former Station Q lead) and Tom Ohki (ex-Raytheon BBN Technologies) share their journey from academic research to building Emergence Quantum—a company focused on the systems-level challenges of quantum computing and beyond.Unlike typical quantum startups racing to build better qubits, Emergence takes a "qubit-agnostic" approach, focusing on the critical control systems, cryogenic electronics, and infrastructure needed to scale any quantum platform. Their work spans from cryo-CMOS control systems that operate at millikelvin temperatures to revolutionary applications of cryogenic cooling in classical data centers.What You'll LearnHow cryo-CMOS technology solves the fundamental wiring bottleneck that prevents quantum computers from scaling beyond hundreds of qubitsWhy the "special ops" team model enables breakthrough engineering when tackling unprecedented technical challenges across quantum and classical computingHow cryogenic cooling could transform classical data centers by dramatically reducing power consumption and improving processor performanceThe systems-level thinking required to build quantum computers that actually work at scale, beyond just improving individual qubit performanceWhy Australia offers unique advantages for deep tech R&D companies focused on long-term hardware development rather than venture-driven growthHow quantum computing infrastructure development creates spillover benefits for classical computing, sensing, and other cryogenic applicationsThe historical parallels between today's quantum engineering challenges and the foundational R&D that built the internet and early computing systemsWhy "qubit-agnostic" approaches to control systems provide more flexibility as quantum hardware continues evolvingCompany & Guest LinksEmergence QuantumDavid ReillyTom OhkiResearch & PapersNature paper on cryo-CMOS coexistence with spin qubits Historical cryo-CMOS researchOrganizations MentionedMicrosoft Station Q (former quantum research division)Raytheon BBN Technologies (internet pioneer, quantum research)University of SydneyTechnologies & ConceptsCryo-CMOS: CMOS electronics operating at cryogenic temperaturesDilution refrigerators: Ultra-low temperature cooling systemsSuperconducting quantum devices and control systemsKey Insights"We recognize that although quantum is very much moving into more traditional engineering domains, there's still so much fundamental research—you have to walk both paths. It will be both fundamental science and applied engineering, all at the same time." — David Reilly on the dual nature of quantum development"Every member had this deep expertise, and we were able to progress in a flexible agile way. That was exactly the secret." — Tom Ohki on building high-performing technical teams"You could ask the question: what are the attributes of scalable qubits, given the constraints of what you can build at the control layer?" — David Reilly on systems-level thinking"If you don't believe in [scaling classical cryogenic computing], but you believe in quantum computing, there's some mismatch here—because the fundamental aspects are completely identical." — Tom Ohki on infrastructure requirements"We're not trying to disrupt the incumbent technology. We're trying to improve it. But along the way, we're building the foundation for a world beyond that." — David Reilly on their strategic approachCommunity & Next StepsReady to dive deeper into quantum systems engineering? Subscribe to New Quantum Era to catch every episode exploring the engineering breakthroughs that will define quantum computing's future.Share this episode with colleagues working on complex technical systems—the insights on team dynamics and long-term R&D strategy apply far beyond quantum computing.Join our community of quantum computing professionals, researchers, and technically curious minds who are shaping this field's development.
From Steel Mills to Quantum Scale-Up: Inside Illinois's Bold Bet on the Future of ComputingWhat does it take to build the world's largest dedicated quantum technology park — on the site of a former steel mill? Harley Johnson is leading that effort, and the answer involves equal parts materials science, economic development, and a 30-year bet on quantum that's finally paying off.Why This Episode MattersIf you're following the quantum computing industry's path from lab prototypes to commercial-scale systems, this episode maps the terrain. Harley Johnson — a computational materials scientist turned CEO of the Illinois Quantum and Microelectronics Park (IQMP) — explains how Illinois assembled a unique combination of federal research funding, state economic investment, national labs, and top-tier universities into a 128-acre technology park designed to solve the quantum industry's hardest problem: scaling up.Whether you're a researcher, a founder, a policymaker, or someone trying to understand where quantum jobs and applications are actually headed, this conversation lays out how one state is building the infrastructure — physical, institutional, and human — to make large-scale quantum computing real.What You'll LearnHow a 1994 bet on quantum mechanics in a mechanical engineering lab led to directing the largest dedicated quantum tech park in the worldWhy Illinois chose a "beyond silicon" strategy for the CHIPS and Science Act — and how landing 4 of the first 10 federal quantum centers positioned the state for what came nextHow IQMP's public-private governance model works: a university-governed LLC partnering with private developers, accountable to the public while incentivizing industryWhy the park deliberately hosts a diverse portfolio of hardware modalities — including PsiQuantum, IBM, Inflection, Dirac, and Pascal — and how that mirrors venture portfolio thinkingHow IQMP's algorithm center connects quantum hardware companies with Fortune 500 end users in finance, insurance, energy, logistics, and pharmaWhat the DARPA Quantum Benchmarking Initiative means for tenant selection and validationWhy roughly two-thirds of future quantum industry jobs may require a bachelor's degree or less — and what that means for workforce development on a former industrial siteHow the Duality Accelerator, Chicago Quantum Exchange, and Polsky Center create a pipeline from early-stage startups to scale-up tenantsWhy the convergence of physics, engineering, and computer science — all housed in one college at UIUC — is accelerating quantum's transition from science to engineeringSponsorqubitsok — Cut Noise. Work Quantum. The quantum computing job board and arXiv research digest built for the community. - Job seekers & researchers: Subscribe free at qubitsok.com — weekly job alerts + daily paper digest filtered by 400+ quantum tags. - Hiring managers: Post your quantum role and reach 500+ targeted subscribers. Use code NEWQUANTUMERA-50 for 50% off your first listing at qubitsok.com/post-job.Resources & LinksGuest LinksHarley Johnson — Professor, University of Illinois Urbana-Champaign, Department of Mechanical Science and Engineering and Materials Science Illinois Quantum and Microelectronics Park (IQMP)Organizations & ProgramsChicago Quantum Exchange (CQE) — regional hub coordinating quantum research, workforce studies, and industry engagement Duality Accelerator — quantum startup accelerator run through the Polsky Center at the University of Chicago Polsky Center for Entrepreneurship and Innovation, University of ChicagoDARPA Quantum Benchmarking Initiative — federal program validating progress toward useful quantum computing NSF MRSEC at UIUC — Materials Research Science and Engineering Center focused on electronic and quantum materials Policy & FundingCHIPS and Science Act — federal legislation driving investment in semiconductor and quantum technology manufacturing in the US Companies MentionedPsiQuantum — photonic quantum computing company scaling up at IQMPIBM — anchor tenant at IQMP with longstanding partnership with UIUCKey Quotes & Insights"Help me pick a problem, a topic that is not big now, but would be big in 10 years." — Harley Johnson, on the question he asked his advisor in 1994 that launched his career in quantum materials"When I heard my friends who are experimental physicists say, 'We know how to do it, now it's just an engineering problem,' I said great — now you've thrown down the gauntlet. Let the engineers at it.""Something like two-thirds of the jobs that this industry will eventually create will require a bachelor's degree or less." — On workforce projections from Chicago Quantum Exchange research"Our neighbors and community members are learning about quantum and thinking about how my grandson gets a job in quantum. Because my family, until now, we're steelworkers." — On the community impact of building a quantum park on a former US Steel site"We're seeing a convergence of the great productive academic minds from computer science, engineering, and physics working now on the same problems. I'm not sure we saw that even five years ago."Related EpisodesAlejandra Y. Castillo — Quantum as a Regional Economic Development Engine — Castillo, former Assistant Secretary of Commerce for Economic Development, discusses how quantum technologies fit into federal and state economic strategy through the CHIPS and Science Act, EDA Tech Hubs, and inclusive workforce development. Essential context for understanding the policy and economic framework that IQMP operates within.Martin Laforest — Building Quebec's Quantum Ecosystem — Laforest, partner at Quantacet and advisor to Canada's National Quantum Strategy, traces how Quebec built one of the world's strongest quantum ecosystems through decades of strategic investment — starting with a bet on condensed matter physics in the 1970s. A compelling parallel to the Illinois story and a window into how this pattern is playing out globally.Nadya Mason — Quantum Leadership — Mason, the dean of the Pritzker School of Molecular Engineering at University of Chicago, is a major force on the academic side of the Illinois quantum ecosystem, and has strong views on what's needed in terms of inclusion and education. <...
Breaking Down RSA: How QLDPC Codes Cut Quantum Computing Requirements by an Order of MagnitudeWhat if I told you that the number of qubits needed to break RSA encryption just dropped from over a million to around 100,000? That's exactly what researchers at Iceberg Quantum achieved by combining quantum low-density parity-check (QLDPC) error correction with algorithmic optimizations—potentially accelerating quantum cryptography timelines by years.Why this episode mattersThis episode dives into groundbreaking research that could reshape quantum computing's practical timeline. We explore how QLDPC codes overcome the physical constraints of surface codes, why hardware diversity is driving new error correction approaches, and what this means for the race toward cryptographically relevant quantum computers.Perfect for quantum researchers, cryptography professionals, and anyone curious about the engineering challenges between today's quantum devices and tomorrow's code-breaking machines.What you'll learnWhy QLDPC codes outperform surface codes — How throwing out nearest-neighbor connectivity assumptions unlocks better physical-to-logical qubit ratios across multiple hardware platforms The algorithmic tricks that matter — How shared register reads and parallelization techniques can dramatically reduce runtime on slower quantum hardware platforms like trapped ions and neutral atoms What "hardware agnostic" really means — Why developing error correction methods that work across superconducting, trapped ion, photonic, and neutral atom platforms is crucial for the quantum ecosystemHow generalized ladder surgery enables logical operations — The breakthrough that made QLDPC codes viable for full quantum computation, not just quantum memory storageWhy decoding remains the bottleneck — The real-time classical computation challenges that still need solving to make fault-tolerant quantum computing practicalThe business model emerging around quantum architecture — How companies like Iceberg are positioning themselves as the "ARM or Nvidia" of quantum computing through specialized fault-tolerant designsWhat cryptographers should know now — Why the timeline for cryptographically relevant quantum computers may be compressing faster than expected, and why algorithmic improvements matter as much as hardware scalingResources & linksIceberg Quantum's Pinnacle paper — "Reducing the Overhead of Quantum Error Correction with QLDPC Codes"Craig Gidney's foundational Shor's algorithm optimization workScott Aaronson's blog analysis of the research implications Sponsorqubitsok — Cut Noise. Work Quantum. The quantum computing job board and arXiv research digest built for the community. - Job seekers & researchers: Subscribe free at qubitsok.com — weekly job alerts + daily paper digest filtered by 400+ quantum tags. - Hiring managers: Post your quantum role and reach 500+ targeted subscribers. Use code NEWQUANTUMERA-50 for 50% off your first listing at qubitsok.com/post-job.Key insights & quotes"We think this is an immensely fundamentally valuable thing to do — when hardware improvements and reduced resource requirements converge, we'll be able to do something useful." — Larry, Iceberg Quantum CSO"It would probably be a big mistake to assume that the numbers are not going to keep going down" — on future resource requirement reductions for RSA breaking"At every level of scaling, new challenges emerge — it's not just a matter of taking a zero off your number" — Paul Webster on why order-of-magnitude improvements translate to real timeline changes"There's no obvious reason why something like the Pinnacle architecture wouldn't have an obvious impact once hardware companies reach hundreds of thousands of qubits" — on practical implementation timelines"This is why it's so important to have this broader perspective and not be too dependent on the assumptions of one hardware platform" — on the value of hardware-agnostic approaches
How a Lawyer and a Listicle Launched One of Quantum's Most Influential Media PlatformsEvan Kubes had no physics degree, no engineering background, and no idea what a qubit was when he stumbled across a press release about AWS investing in quantum. What he did have was experience translating complex industries for mainstream audiences — and within months, he and co-founder Alex Challans had turned a Wix website and a "Top 20 Most Influential People in Quantum" listicle into The Quantum Insider, now one of the industry's leading media and intelligence platforms. In this episode, Evan shares how that scrappy start grew into Resonance, a multi-vertical deep tech media company — and why he spent the last year making Our Quantum Future, a feature-length documentary premiering at APS March Meeting that aims to bring quantum out of the echo chamber and onto your screen.Why this episode mattersThis episode marks a new chapter for The New Quantum Era. In the intro, Sebastian shares some big updates — going fully independent, new media projects including the Helgoland 2025 documentary, a newsletter, and broader efforts to build a more accessible and equitable quantum technology ecosystem through open source and open standards. He also announces his new role as a Fellow at the Unitary Foundation. Read the full blog post: A New Chapter.The conversation with Evan Kubes is a perfect fit for this moment. Evan sits at the intersection of quantum's technical community and the broader world trying to make sense of it — a translator between physicists and the public. His story illuminates something the industry rarely discusses: how do you actually build awareness, trust, and market understanding for a technology most people can't explain?The documentary Our Quantum Future, produced for the International Year of Quantum and featuring Nobel laureates, a former CIA officer, and the leaders of Google, Microsoft, and IonQ, is designed for exactly that audience — the curious non-specialist who wants to understand what quantum means for the world. The ethics and national security themes it surfaces are relevant well beyond the quantum community.What you'll learnHow The Quantum Insider went from zero readers to a leading quantum industry platform using a creative "vanity listicle" strategy that got CEOs to respond overnightWhy a lawyer from the esports world saw the same market opportunity in quantum that venture capitalists were pouring billions into — and what that says about the accessibility gap in deep techHow the Resonance media model applies The Quantum Insider playbook to space, AI, and climate tech — and what makes a deep tech vertical ripe for this approachWhat 39 interviews across 40 countries revealed about how the quantum community thinks about ethics — including a striking divide between engineers ("I'm just solving a hard problem") and policymakers ("we need safeguards now")The Oppenheimer parallel: how the documentary draws a direct line between the atomic bomb's development and today's quantum technology, and why some builders don't think about consequences while others think about nothing elseA former CIA operative's reframing of quantum advantage as incremental compounding — 1% better per year for five years — and why that makes quantum feel much more real today than the "break all encryption" narrative suggestsWhy academics and corporate leaders consistently disagree on quantum's timeline, and where Evan lands after a year of filming both campsResources & linksGuest linksThe Quantum Insider — Quantum industry media, intelligence, and data platform co-founded by EvanResonance — Parent company extending the deep tech media model to space, AI, climate tech [link to confirm]Our Quantum Future — Documentary website with sign-up for distribution updatesPeople mentioned in the episodeAlex Challans — Co-founder and CEO of The Quantum Insider; Evan's business partnerNicholas Ogler — Former CIA operative featured in the documentary; redefines quantum advantage from a national security lensDr. Bill Phillips — Nobel Prize-winning physicist; discusses his bet with Carl Williams on the quantum advantage timelineDr. John Doyle — Professor of quantum at Harvard, president of APS; draws the Oppenheimer parallelIlyas Khan — Former CEO of Quantinuum; argues for educational licensing frameworks around quantum technologyEric Cornell — Nobel Prize winner featured in the documentaryMentioned in the introA New Chapter — NQE blog post — Sebastian's full announcement on going independent, new projects, and the future of the podcastUnitary Foundation — Open-source quantum technology ecosystem; Sebastian is now a FellowKey quotes & insights"When Oppenheimer and the most brilliant minds in the world were developing the atom, you had a large group who didn't really understand what they were building — they were just trying to solve a very difficult engineering and physics problem. We posed that same question to engineers at Google today: do you ever think about the potential consequences of what you're building? They said, absolutely not.""Quantum advantage to me is simply: if I can do a certain task 1% better every single year for five years, that compounds quite heavily. A country that uses quantum to improve radar detection by half a percent per year for five years has a massive advantage." — Nicholas Agler, former CIA"We emailed 20 people in the quantum industry — CEOs of Microsoft, Google, IonQ, Atom Computing — and said: Congratulations, you made The Quantum Insider's list of the top 20 most influential people in quantum. Every single person responded and agreed to do an interview.""For any industry to succeed, you've gotta get the venture capitalists and the capital markets around it, and you've gotta get the end users excited. If it's only PhDs talking to each other, it's gonna be a very limited market.""This documentary was not made for the quantum industry. It was made for Joe Blow and Cindy Blow at home who've never heard of this industry — to elevate and highlight all this fascinating work that we're doing."Sponsorqubitsok — Cut Noise. Work Quantum. The quantum computing job board and arXiv research digest built for the community. - Job seekers & researchers: Subscribe free at qubitsok.com — weekly job alerts + daily paper digest filtered by 400+ quantum tags. - Hiring managers: Post your quantum role and reach 500+ targeted subscribers. Use code NEWQUANTUMERA-50 for 50% off your first listing at qubitsok.com/post-job.Join the conversationSee the film: Visit ourquantumfuture.com to sign up for distribution updates — the premiere is at APS March Meeting in Boulder, with broader release to follow.Read the blog ...
What does it take to build a thriving quantum ecosystem from the ground up? Martin Laforest, physicist-turned-venture-capitalist at Quantacet, reveals how Quebec transformed a 1970s academic bet into a $400M quantum powerhouse—and why the industry's biggest misconception is thinking quantum computing is either a science problem or an engineering problem when it's clearly both.SummaryIn this conversation, Sebastian sits down with Martin Laforest, partner at Quantacet, Canada's quantum-only VC fund, to explore the messy realities of building quantum companies and ecosystems. Martin brings a rare perspective: PhD from Waterloo's Institute for Quantum Computing, eight years leading scientific outreach, a stint building a post-quantum cryptography startup with ex-BlackBerry executives, and now investing in the quantum future.This episode is for anyone trying to understand how quantum technology actually gets built—not the hype, but the infrastructure, the collaboration models, the government investment strategies, and the patience required. Whether you're technical or just curious about how transformative technologies emerge, Martin offers a grounded view of what's working, what's not, and why the quantum revolution looks more like slow, deliberate ecosystem building than overnight breakthroughs.What You'll LearnWhy quantum is both a science and engineering challenge and how the vacuum tube-to-transistor transition illuminates today's quantum journeyHow Quebec built a world-class quantum ecosystem starting from a 1970s university bet on condensed matter physics through to today's $400M provincial investmentThe infrastructure that matters: why Sherbrooke's six shared dilution fridges and quantum communication testbed represent a different collaboration modelWhat VCs actually look for in quantum startups beyond the technology—and why Martin believes early-stage investing is about building great companies, not just returnsThe three most dangerous misconceptions plaguing quantum technology (spoiler: it's not just about quantum computers)How regional quantum ecosystems should compete and collaborate with lessons from Netherlands, Chicago, and UK programsWhy fundamental research funding can't stop even as commercialization accelerates—and what happens when governments don't understand this balanceWhat "mutualized infrastructure" means in practice and why no single entity owning critical testbeds might be the secret sauceHow federal and provincial politics shape quantum strategy in Canada and what other countries can learn from itResources & LinksQuantacetInstitute for Quantum Computing (IQC)University of Sherbrooke Institute QuantiqueC2MI semiconductor fabrication facilityQuantumDELTAKey InsightsOn the science vs. engineering debate:"People ask if quantum computing is still a science problem or just engineering. It's both. Look at the vacuum tube to transistor transition—we needed new physics and new engineering. That's exactly where we are now."On ecosystem building:"Sherbrooke made a bet on condensed matter physics in the 1970s. Fifty years later, they have six dilution fridges available for rent and a quantum communication testbed owned by no one. That infrastructure patience is what builds real ecosystems."On VC philosophy:"Early-stage venture capital is about building great companies. The money is a byproduct. If you focus on the returns first, you'll make the wrong decisions every time."On common misconceptions:"The biggest myth is that quantum technology equals quantum computing. We have quantum sensors, quantum communications, post-quantum crypto—this is a multi-faceted industry, not a single magic box."On balancing research and commercialization:"You can't stop funding fundamental research just because commercialization is happening. The vacuum tube didn't kill physics research. We need both engines running or the whole thing stalls."Join the ConversationSubscribe to The New Quantum Era wherever you get your podcasts to hear more conversations with the people building quantum technology's future.
What if consciousness isn’t generated by the brain, but emerges from its interaction with a ubiquitous quantum field? In this episode, Sebastian Hassinger and theoretical physicist Joachim Keppler explore a zero‑point field model of consciousness that could reshape both neuroscience and quantum theory.SummaryThis conversation is for anyone curious about the “hard problem” of consciousness, quantum brain theories, and the future of quantum biology and AI. Joachim shares his QED‑based framework where the brain couples to the electromagnetic zero‑point field via glutamate, producing macroscopic quantum effects that correlate with conscious states. You’ll hear how this model connects existing neurophysiology, testable predictions, and deep questions in philosophy of mind.What You’ll Learn How a quantum field theorist ended up founding an institute for the scientific study of consciousness and building a rigorous, physics‑grounded framework for it. Why consciousness may hinge on a universal principle: the brain’s resonant coupling to the electromagnetic zero‑point field, not just classical neural firing. What macroscopic quantum phenomena in the brain look like, including coherence domains, self‑organized criticality, and long‑range synchronized activity patterns linked to conscious states. How glutamate, the brain’s most abundant neurotransmitter, could act as the molecular interface to the zero‑point field inside cortical microcolumns. Which concrete experiments could confirm or falsify this theory, from detecting macroscopic quantum coherence in neurotransmitter molecules to measuring glutamate‑driven biophoton emissions with a specific quantum “fingerprint.” Why Joachim sees the zero‑point field as a dual‑aspect “psychophysical” field and how that reframes classic philosophy‑of‑mind debates about qualia and the nature of awareness. What this perspective implies for artificial consciousness and whether future quantum computers or engineered systems might couple to the field and become genuinely conscious rather than merely simulating it. How quantum biology could offer an evolutionary path for consciousness, extending field‑coupling ideas from the human brain down to simpler organisms and bacterial signaling.Resources & LinksDIWISS Research Institute for the scientific study of consciousness “Macroscopic quantum effects in the brain: new insights into the neural correlates of consciousness” – Research article outlining the QED/zero‑point field model and its neurophysiological connections. “A New Way of Looking at the Neural Correlates of Consciousness” – Paper introducing the idea that the full spectrum of qualia is encoded in the zero‑point field. “The Role of the Brain in Conscious Processes: A New Way of Understanding the Neural Correlates of Consciousness” – Further develops the brain‑as‑interface, ZPF‑based frameworkHuman high intelligence is involved in spectral redshift of biophotonic activities in the brain - studies on glutamate‑linked emissions in brain tissue – Experiments that inform potential tests of the theory.Key Quotes or Insights “The brain may not produce consciousness; it may tune into it by coupling to the zero‑point field, like a resonant oscillator accessing a universal substrate of awareness.” “Conscious states correspond to macroscopic quantum patterns in the brain—highly synchronized, near‑critical dynamics that disappear when the field coupling breaks down in unconsciousness.” “Glutamate‑rich cortical microcolumns could be the molecular gateway to the zero‑point field, forming coherence domains that orchestrate neuronal firing from the bottom up.” “If we can engineer systems that replicate this field‑coupling mechanism, we might not just simulate consciousness—we might be building genuinely conscious artificial systems.” “Quantum biology could reveal an evolutionary continuum of field‑coupling, from simple organisms to humans, reframing how we think about life, intelligence, and mind.”
What happens when a former elite gymnast with “weak math and science” becomes dean of one of the world’s most influential quantum engineering schools? In this episode of *The New Quantum Era*, Sebastian Hassinger talks with Prof. Nadya Mason about quantum 2.0, building a regional quantum ecosystem, and why she sees leadership as a way to serve and build community rather than accumulate power.Summary  This conversation is for anyone curious about how quantum materials research, academic leadership, and large‑scale public investment are shaping the next phase of quantum technology. You’ll hear how Nadya’s path from AT&T Bell Labs to dean of the Pritzker School of Molecular Engineering at UChicago informs her service‑oriented approach to leadership and ecosystem building.  The discussion spans superconducting devices, Chicago’s quantum hub strategy, and what it will actually take to build a diverse, job‑ready quantum workforce in time for the coming wave of applications.What You’ll LearnHow a non‑linear path (elite sports, catching up in math, early lab work) can lead to a career at the center of quantum science and engineering.Why condensed matter and quantum materials are the quiet “bottleneck” for scalable quantum computing, networking, and transduction technologies.How superconducting junctions, Andreev bound states, and hybrid devices underpin today’s superconducting qubits and topological quantum efforts.The difference between “quantum 1.0” (lasers, GPS, nuclear power, semiconductors) and “quantum 2.0” focused on sensing, communication, and computation.How the Pritzker School of Molecular Engineering and the Chicago Quantum Exchange are deliberately knitting together universities, national labs, industry, and state funding into a cohesive quantum cluster.Why Nadya frames leadership as building communities around science and opportunity, and what that means in a faculty‑driven environment where “nobody works for the dean.”Concrete ways Illinois and UChicago are approaching quantum education and workforce development, from REUs and the Open Quantum Initiative to the South Side Science Fair.Why early math confidence plus hands‑on research experience are the two most important ingredients for preparing the next generation of quantum problem‑solvers.Resources & Links  Pritzker School of Molecular Engineering, University of Chicago – Nadya’s home institution, pioneering an interdisciplinary, theme‑based approach to quantum, materials for sustainability, and immunoengineering.Chicago Quantum Exchange – Regional hub connecting universities, national labs, and industry to build quantum networks, workforce, and commercialization pathways.South Side Science Fair (UChicago) – Large‑scale outreach effort bringing thousands of local students to campus to encounter science and quantum concepts early.Key Quotes or Insights  “A rainbow is more beautiful because I understand the fraction behind it”—how physics deepened Nadya’s sense of wonder rather than reducing it.“In condensed matter, the devil is in the material—and the interfaces”—why microscopic imperfections and humidity‑induced “schmutz” can make or break quantum devices.“Quantum 1.0 gave us lasers, GPS, and nuclear power; quantum 2.0 is about using quantum systems to *process* information through sensing, networking, and computing.”“If you want to accumulate power, academia is not the place—faculty don’t work for me. Leadership here is about building community and creating opportunities.”“If we want to lead in quantum as a country, we have to make math skills and real lab experiences accessible early, so kids even know this world exists as an option.”Calls to Action  Subscribe to The New Quantum Era and share this episode with a colleague or student who’s curious about quantum careers and leadership beyond the usual narratives.If you’re an educator or program lead, explore ways to bring hands‑on research experiences and accessible math support into your classroom or community programs.If you’re in industry, academia, or policy, consider how you or your organization can plug into regional quantum ecosystems like Chicago’s to support training, internships, and inclusive hiring.
Your host, Sebastian Hassinger, talks with Alumni Ventures managing partner Chris Sklarin about how one of the most active US venture firms is building a quantum portfolio while “democratizing” access to VC as an asset class for individual investors. They dig into Alumni Ventures’ co‑investor model, how the firm thinks about quantum hardware, software, and sensing, and why quantum should be viewed as a long‑term platform with near‑term pockets of commercial value. Chris also explains how accredited investors can start seeing quantum deal flow through Alumni Ventures’ syndicate.Chris’ background and Alumni Ventures in a nutshellChris is an MIT‑trained engineer who spent years in software startups before moving into venture more than 20 years ago.Alumni Ventures is a roughly decade‑old firm focused on “democratizing venture capital” for individual investors, with over 11,000 LPs, more than 1.5 billion dollars raised, and about 1,300 active portfolio companies.The firm has been repeatedly recognized as a highly active VC by CB Insights, PitchBook, Stanford GSB, and Time magazine.How Alumni Ventures structures access for individualsMost investors come in as individuals into LLC‑structured funds rather than traditional GP/LP funds.Alumni Ventures always co‑invests alongside a lead VC, using the lead’s conviction, sector expertise, and diligence as a key signal.The platform also offers a syndicate where accredited investors can opt in to see and back individual deals, including those tagged for quantum.Quantum in the Alumni Ventures portfolioAlumni Ventures has 5–6 quantum‑related investments spanning hardware, software, and applications, including Rigetti, Atom Computing, Q‑CTRL, Classiq, and quantum‑error‑mitigation startup Qedma/Cadmus.Rigetti was one of the firm’s earliest quantum investments; the team followed on across multiple rounds and was able to return capital to investors after Rigetti’s SPAC and a strong period in the public markets.Chris also highlights interest in Cycle Dre (a new company from Rigetti’s former CTO) and application‑layer companies like InQ and quantum sensing players.Barbell funding and the “3–5 year” viewChris responds to the now‑familiar “barbell” funding picture in quantum— a few heavily funded players and a long tail of small companies—by emphasizing near‑term revenue over pure science experiments.He sees quantum entering an era where companies must show real products, customers, and revenue, not just qubit counts.Over the next 3–5 years, he expects meaningful commercial traction first in areas like quantum sensing, navigation, and point solutions in chemistry and materials, with full‑blown fault‑tolerant systems further out.Hybrid compute and NVIDIA’s signal to the marketChris points to Jensen Huang’s GTC 2025 keynote slide on NVIDIA’s hybrid quantum–GPU ecosystem, where Alumni Ventures portfolio companies such as Atom Computing, Classiq, and Rigetti appeared.He notes that NVIDIA will not put “science projects” on that slide—those partnerships reflect a view that quantum processors will sit tightly coupled next to GPUs to handle specific workloads.He also mentions a large commercial deal between NVIDIA and Groq (a classical AI chip company in his portfolio) as another sign of a more heterogeneous compute future that quantum will plug into.Where near‑term quantum revenue shows upChris expects early commercial wins in sensing, GPS‑denied navigation, and other narrow but valuable applications before broad “quantum advantage” in general‑purpose computing.Software and middleware players can generate revenue sooner by making today’s hardware more stable, more efficient, or easier to program, and by integrating into classical and AI workflows.He stresses that investors love clear revenue paths that fit into the 10‑year life of a typical venture fund.University spin‑outs, clustering, and deal flowAlumni Ventures certainly sees clustering around strong quantum schools like MIT, Harvard, and Yale, but Chris emphasizes that the “alumni angle” is secondary to the quality of the venture deal.Mature tech‑transfer offices and standard Delaware C‑corps mean spinning out quantum IP from universities is now a well‑trodden path.Chris leans heavily on network effects—Alumni Ventures’ 800,000‑person network and 1,300‑company CEO base—as a key channel for discovering the most interesting quantum startups.Managing risk in a 100‑hardware‑company worldWith dozens of hardware approaches now in play, Chris uses Alumni Ventures’ co‑investor model and lead‑investor diligence as a filter rather than picking purely on physics bets.He looks for teams with credible near‑term commercial pathways and for mechanisms like sensing or middleware that can create value even if fault‑tolerant systems arrive later than hoped.He compares quantum to past enabling waves like nanotech, where the biggest impact often shows up as incremental improvements rather than a single “big bang” moment.Democratizing access to quantum ventureAlumni Ventures allows accredited investors to join its free syndicate, self‑attest accreditation, and then see deal materials—watermarked and under NDA—for individual investments, including quantum.Chris encourages people to think in terms of diversified funds (20–30 deals per fund year) rather than only picking single names in what is a power‑law asset class.He frames quantum as a long‑duration infrastructure play with near‑term pockets of usefulness, where venture can help investors participate in the upside without getting ahead of reality.
Alejandra Y. Castillo, former Assistant Secretary of Commerce for Economic Development and now Chancellor Senior Fellow for Economic Development at Purdue University Northwest, joins your host, Sebastian Hassinger, to discuss how quantum technologies can drive inclusive regional economic growth and workforce development. She shares lessons from federal policy, Midwest tech hubs, and cross-state coalitions working to turn quantum from lab research into broad-based opportunity.Themes and key insightsQuantum as near-term and multi-faceted: Castillo pushes back on the idea that quantum is distant, emphasizing that computing, sensing, and communications are already maturing and attracting serious investment from traditional industries like biopharma.From federal de-risking to regional ecosystems: She describes the federal role as de-risking early innovation through programs under the CHIPS and Science Act while stressing that long-term success depends on regional coalitions across states, universities, industry, philanthropy, and local government.Inclusive workforce and supply-chain planning: Castillo argues that “quantum workforce” must go beyond PhDs to include a mapped ecosystem of jobs, skills, suppliers, housing, and infrastructure so that local communities see quantum as opportunity, not displacement.National security, urgency, and inclusion: She frames sustained quantum investment as both an economic and national security imperative, warning that inconsistent U.S. funding risks falling behind foreign competitors while also noting that private capital alone may ignore inclusion and regional equity.Notable quotes“We either focus on the urgency or we’re going to have to focus on the emergency.”“No one state is going to do this… This is a regional play that we will be called to answer for the sake of a national security play as well.”“We want to make sure that entire regions can actually reposition themselves from an economic perspective, so that people can stay in the places they call home—now we’re talking about quantum.”“Are we going to make that same mistake again, or should we start to think about and plan how quantum is going to also impact us?”Articles, papers, and initiatives mentionedAmerica's quantum future depends on regional ecosystems like Chicago's — Alejandra’s editorial in Crain’s Chicago Business calling for sustained, coordinated investment in quantum as a national security and economic priority, highlighting the role of the Midwest and tech hubs.CHIPS and Science Act (formerly “Endless Frontier”) — U.S. legislation that authorized large-scale funding for semiconductors and science, enabling EDA’s Tech Hubs and NSF’s Engines programs to back regional coalitions in emerging technologies like quantum.EDA Tech Hubs and NSF Engines programs — Federal initiatives that fund multi-state consortiums combining universities, companies, and civic organizations to build durable regional innovation ecosystems, including quantum-focused hubs in the Midwest.National Quantum Algorithms Center — This center explores quantum algorithms for real-world problems such as natural disasters and biopharma discovery, aiming to connect quantum advances directly to societal challenges.Roberts Impact Lab at Purdue Northwest (with Quantum Corridor) – A testbed and workforce development center focused on quantum, AI, and post-quantum cryptography, designed to prepare local talent and companies for quantum-era applications.Chicago Quantum Exchange and regional partners (Illinois, Indiana, Wisconsin) – A multi-university and multi-state collaboration that pioneered a model for regional quantum ecosystems.
In this episode of The New Quantum Era, your host Sebastian Hassinger is joined by Chetan Nayak, Technical Fellow at Microsoft, professor of physics at the University of California Santa Barbara, and driving force behind Microsoft's quantum hardware R&D program. They discuss a modality of qubit that has not been covered on the podcast before, based on Majorana fermonic behaviors, which have the promise of providing topological protection against the errors which are such a challenge to quantum computing. Guest Bio Chetan Nayak is a Technical Fellow at Microsoft and leads the company’s topological quantum hardware program, including the Majorana‑1 processor based on Majorana‑zero‑mode qubits.  He is also a professor of physics at UCSB and a leading theorist in topological phases of matter, non‑Abelian anyons, and topological quantum computation.  Chetan co‑founded Microsoft’s Station Q  in 2005, building a bridge from theoretical proposals for topological qubits to engineered semiconductor–superconductor devices. What we talk about Chetan’s first exposure to quantum computing in Peter Shor’s lectures at the Institute for Advanced Study, and how that intersected with his PhD work with Frank Wilczek on non‑Abelian topological phases and Majorana zero modes.  The early days of topological quantum computation: fractional quantum Hall states at , emergent quasiparticles, and the realization that braiding these excitations naturally implements Clifford gates.  How Alexei Kitaev’s toric‑code and Majorana‑chain ideas connected abstract topology to concrete condensed‑matter systems, and led to Chetan’s collaboration with Michael Freedman and Sankar Das Sarma.  The 2005 proposal for a gallium‑arsenide quantum Hall device realizing a topological qubit, and the founding of Station Q to turn such theoretical blueprints into experimental devices in partnership with academic labs.  Why Microsoft pivoted from quantum Hall platforms to semiconductor–superconductor nanowires: leveraging the Fu–Kane proximity effect, spin–orbit‑coupled semiconductors, and a huge material design space—while wrestling with the challenges of interfaces and integration.  The evolution of the tetron architecture: two parallel topological nanowires with four Majorana zero modes, connected by a trivial superconducting wire and coupled to quantum dots that enable native Z‑ and X‑parity loop measurements.  How topological superconductivity allows a superconducting island to host even or odd total electron parity without a local signature, and why that nonlocal encoding provides hardware‑level protection for the qubit’s logical 0 and 1.  Microsoft’s roadmap in a 2D “quality vs. complexity” space: improving topological gap, readout signal‑to‑noise, and measurement fidelity while scaling from single tetrons to error‑corrected logical qubits and, ultimately, utility‑scale systems.  Error correction on top of topological qubits: using surface codes and Hastings–Haah Floquet codes with native two‑qubit parity measurements, and targeting hundreds of physical tetrons per logical qubit and thousands of logical qubits for applications like Shor’s algorithm and quantum chemistry.  Engineering for scale: digital, on–off control of quantum‑dot couplings; cryogenic CMOS to fan out control lines inside the fridge; and why tetron size and microsecond‑scale operations sit in a sweet spot for both physics and classical feedback.  Where things stand today: the Majorana‑1 chiplet, recent tetron loop‑measurement experiments, DARPA’s US2QC program, and how external users—starting with government and academic partners—will begin to access these devices before broader Azure Quantum integration. Papers and resources mentionedThese are representative papers and resources that align with topics and allusions in the conversation; they are good entry points if you want to go deeper.Non‑Abelian Anyons and Topological Quantum Computation – S. Das Sarma, M. Freedman, C. Nayak, Rev. Mod. Phys. 80, 1083 (2008); Early device proposalsSankar Das Sarma, Michael Freedman, and Chetan Nayak, “Topological quantum computation,” Physics Today 59(7), 32–38 (July 2006).Roadmap to fault‑tolerant quantum computation using topological qubits – C. Nayak et al., arXiv:2502.12252. Distinct lifetimes for X and Z loop measurements in a Majorana tetron - C. Nayaak et al., arXiv:2507.08795.Majorana qubit codes that also correct odd-weight errors - S. Kundu and B. Reichardt, arXiv:2311.01779. Microsoft's Majorana 1 chip carves new path for quantum computing, Microsoft blog post 
In this episode of The New Quantum Era, Sebastian talks with Hrant Gharibyan, CEO and co‑founder of BlueQubit, about “peaked circuits” and the challenge of verifying quantum advantage. They unpack Scott Aaronson and Yuxuan Zhang’s original peaked‑circuit proposal, BlueQubit’s scalable implementation on real hardware, and a new public challenge that invites the community to attack their construction using the best classical algorithms available. Along the way, they explore how this line of work connects to cryptography, hardness assumptions, and the near‑term role of quantum devices as powerful scientific instruments.Topics CoveredWhy verifying quantum advantage is hard The core problem: if a quantum device claims to solve a task that is classi-cally intractable, how can anyone check that it did the right thing? Random circuit sampling (as in Google’s 2019 “supremacy” experiment and follow‑on work from Google and Quantinuum) is believed to be classically hard to simulate, but the verification metrics (like cross‑entropy benchmarking) are themselves classically intractable at scale.What are peaked circuits? Aaronson and Zhang’s idea: construct circuits that look like random circuits in every respect, but whose output distribution secretly has one special bit string with an anomalously high probability (the “peak”). The designer knows the secret bit string, so a quantum device can be verified by checking that measurement statistics visibly reveal the peak in a modest number of shots, while finding that same peak classically should be as hard as simulating a random circuit.BlueQubit’s scalable construction and hardware demo BlueQubit extended the original 24‑qubit, simulator‑based peaked‑circuit construction to much larger sizes using new classical protocols. Hrant explains their protocol for building peaked circuits on Quantinuum’s H2 processor with around 56 qubits, thousands of gates, and effectively all‑to‑all connectivity, while still hiding a single secret bit string that appears as a clear peak when run on the device.Obfuscation tricks and “quantum steganography” The team uses multiple obfuscation layers (including “swap” and “sweeping” tricks) to transform simple peaked circuits into ones that are statistically indistinguishable from generic random circuits, yet still preserve the hidden peak.The BlueQubit Quantum Advantage Challenge To stress‑test their hardness assumptions, BlueQubit has published concrete circuits and launched a public bounty (currently a quarter of a bitcoin) for anyone who can recover the secret bit string classically. The aim is to catalyze work on better classical simulation and de‑quantization techniques; either someone closes the gap (forcing the protocol to evolve) or the standing bounty helps establish public trust that the task really is classically infeasible.Potential cryptographic angles Although the main focus is verification of quantum advantage, Hrant outlines how the construction has a cryptographic flavor: a secret bit string effectively acts as a key, and only a sufficiently powerful quantum device can efficiently “decrypt” it by revealing the peak. Variants of the protocol could, in principle, yield schemes that are classically secure but only decryptable by quantum hardware, and even quantum‑plus‑key secure, though this remains speculative and secondary to the verification use case. From verification protocol to startup roadmap Hrant positions BlueQubit as an algorithm and capability company: deeply hardware‑aware, but focused on building and analyzing advantage‑style algorithms tailored to specific devices. The peaked‑circuit work is one pillar in a broader effort that includes near‑term scientific applications in condensed‑matter physics and materials (e.g., Fermi–Hubbard models and out‑of‑time‑ordered correlators) where quantum devices can already probe regimes beyond leading classical methods.Scientific advantage today, commercial advantage tomorrow Sebastian and Hrant emphasize that the first durable quantum advantages are likely to appear in scientific computing—acting as exotic lab instruments for physicists, chemists, and materials scientists—well before mass‑market “killer apps” arrive. Once robust, verifiable scientific advantage is established, scaling to larger models and more complex systems becomes a question of engineering, with clear lines of sight to industrial impact in sectors like pharmaceuticals, advanced materials, and manufacturing.The challenge: https://app.bluequbit.io/hackathons/
Episode overviewThis episode of The New Quantum Era features a conversation with Quantum Brilliance co‑founder and CEO Mark Luo and independent board chair Brian Wong about diamond nitrogen vacancy (NV) centers as a platform for both quantum computing and quantum sensing. The discussion covers how NV centers work, what makes diamond‑based qubits attractive at room temperature, and how to turn a lab technology into a scalable product and business.What are diamond NV qubits?  Mark explains how nitrogen vacancy centers in synthetic diamond act as stable room‑temperature qubits, with a nitrogen atom adjacent to a missing carbon atom creating a spin system that can be initialized and read out optically or electronically. The rigidity and thermal properties of diamond remove the need for cryogenics, complex laser setups, and vacuum systems, enabling compact, low‑power quantum devices that can be deployed in standard environments.Quantum sensing to quantum computing  NV centers are already enabling ultra‑sensitive sensing, from nanoscale MRI and quantum microscopy to magnetometry for GPS‑free navigation and neurotech applications using diamond chips under growing brain cells. Mark and Brian frame sensing not as a hedge but as a volume driver that builds the diamond supply chain, pushes costs down, and lays the manufacturing groundwork for future quantum computing chips.Fabrication, scalability, and the value chain  A key theme is the shift from early “shotgun” vacancy placement in diamond to a semiconductor‑style, wafer‑like process with high‑purity material, lithography, characterization, and yield engineering. Brian characterizes Quantum Brilliance’s strategy as “lab to fab”: deciding where to sit in the value chain, leveraging the existing semiconductor ecosystem, and building a partner network rather than owning everything from chips to compilers.Devices, roadmaps, and hybrid nodes  Quantum Brilliance has deployed room‑temperature systems with a handful of physical qubits at Oak Ridge National Laboratory, Fraunhofer IAF, and the Pawsey Supercomputing Centre. Their roadmap targets application‑specific quantum computing with useful qubit counts toward the end of this decade, and lunchbox‑scale, fault‑tolerant systems with on the order of 50–60 logical qubits in the mid‑2030s.Modality tradeoffs and business discipline  Mark positions diamond NV qubits as mid‑range in both speed and coherence time compared with superconducting and trapped‑ion systems, with their differentiator being compute density, energy efficiency, and ease of deployment rather than raw gate speed. Brian brings four decades of experience in semiconductors, batteries, lidar, and optical networking to emphasize milestones, early revenue from sensing, and usability—arguing that making quantum devices easy to integrate and operate is as important as the underlying physics for attracting partners, customers, and investors.Partners and ecosystem  The episode underscores how collaborations with institutions such as Oak Ridge, Fraunhofer, and Pawsey, along with industrial and defense partners, help refine real‑world requirements and ensure the technology solves concrete problems rather than just hitting abstract benchmarks. By co‑designing with end users and complementary hardware and software vendors, Quantum Brilliance aims to “democratize” access to quantum devices, moving them from specialized cryogenic labs to desks, edge systems, and embedded platforms.
Episode overviewJohn Martinis, Nobel laureate and former head of Google’s quantum hardware effort, joins Sebastian Hassinger on The New Quantum Era to trace the arc of superconducting quantum circuits—from the first demonstrations of macroscopic quantum tunneling in the 1980s to today’s push for wafer-scale, manufacturable qubit processors. The episode weaves together the physics of “synthetic atoms” built from Josephson junctions, the engineering mindset needed to turn them into reliable computers, and what it will take for fabrication to unlock true large-scale quantum systems.Guest bioJohn M. Martinis is a physicist whose experiments on superconducting circuits with John Clarke and Michel Devoret at UC Berkeley established that a macroscopic electrical circuit can exhibit quantum tunneling and discrete energy levels, work recognized by the 2025 Nobel Prize in Physics “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.” He went on to lead the superconducting quantum computing effort at Google, where his team demonstrated large-scale, programmable transmon-based processors, and now heads Qolab (also referred to in the episode as CoLab), a startup focused on advanced fabrication and wafer-scale integration of superconducting qubits.Martinis’s career sits at the intersection of precision instrumentation and systems engineering, drawing on a scientific “family tree” that runs from Cambridge through John Clarke’s group at Berkeley, with strong theoretical influence from Michel Devoret and deep exposure to ion-trap work by Dave Wineland and Chris Monroe at NIST. Today his work emphasizes solving the hardest fabrication and wiring challenges—pursuing high-yield, monolithic, wafer-scale quantum processors that can ultimately host tens of thousands of reproducible qubits on a single 300 mm wafer.Key topicsMacroscopic quantum tunneling on a chip: How Clarke, Devoret, and Martinis used a current-biased Josephson junction to show that a macroscopic circuit variable obeys quantum mechanics, with microwave control revealing discrete energy levels and tunneling between states—laying the groundwork for superconducting qubits. The episode connects this early work directly to the Nobel committee’s citation and to today’s use of Josephson circuits as “synthetic atoms” for quantum computing.From DC devices to microwave qubits: Why early Josephson devices were treated as low-frequency, DC elements, and how failed experiments pushed Martinis and collaborators to re-engineer their setups with careful microwave filtering, impedance control, and dilution refrigerators—turning noisy circuits into clean, quantized systems suitable for qubits. This shift to microwave control and readout becomes the through-line from macroscopic tunneling experiments to modern transmon qubits and multi-qubit gates.Synthetic atoms vs natural atoms: The contrast between macroscopic “synthetic atoms” built from capacitors, inductors, and Josephson junctions and natural atomic systems used in ion-trap and neutral-atom experiments by groups such as Wineland and Monroe at NIST, where single-atom control made the quantum nature more obvious. The conversation highlights how both approaches converged on single-particle control, but with very different technological paths and community cultures.Ten-year learning curve for devices: How roughly a decade of experiments on quantum noise, energy levels, and escape rates in superconducting devices built confidence that these circuits were “clean enough” to support serious qubit experiments, just as early demonstrations such as Yasunobu Nakamura’s single-Cooper-pair box showed clear two-level behavior. This foundational work set the stage for the modern era of superconducting quantum computing across academia and industry.Surface code and systems thinking: Why Martinis immersed himself in the surface code, co-authoring a widely cited tutorial-style paper “Surface codes: Towards practical large-scale quantum computation” (Austin G. Fowler, Matteo Mariantoni, John M. Martinis, Andrew N. Cleland, Phys. Rev. A 86, 032324, 2012; arXiv:1208.0928), to translate error-correction theory into something experimentalists could build. He describes this as a turning point that reframed his work at UC Santa Barbara and Google around full-system design rather than isolated device physics.Fabrication as the new frontier: Martinis argues that the physics of decent transmon-style qubits is now well understood and that the real bottleneck is industrial-grade fabrication and wiring, not inventing ever more qubit variants. His company’s roadmap targets wafer-scale integration—e.g., ~100-qubit test chips scaling toward ~20,000 qubits on a 300 mm wafer—with a focus on yield, junction reproducibility, and integrated escape wiring rather than current approaches that tile many 100-qubit dies into larger systems.From lab racks of cables to true integrated circuits: The episode contrasts today’s dilution-refrigerator setups—dominated by bulky wiring and discrete microwave components—with the vision of a highly integrated superconducting “IC” where most of that wiring is brought on-chip. Martinis likens the current state to pre-IC TTL logic full of hand-wired boards and sees monolithic quantum chips as the necessary analog of CMOS integration for classical computing.Venture timelines vs physics timelines: A candid discussion of the mismatch between typical three-to-five-year venture capital expectations and the multi-decade arc of foundational technologies like CMOS and, now, quantum computing. Martinis suggests that the most transformative work—such as radically improved junction fabrication—looks slow and uncompetitive in the short term but can yield step-change advantages once it matures.Physics vs systems-engineering mindsets: How Martinis’s “instrumentation family tree” and exposure to both American “build first, then understand” and French “analyze first, then build” traditions shaped his approach, and how system engineering often pushes him to challenge ideas that don’t scale. He frames this dual mindset as both a superpower and a source of tension when working in large organizations used to more incremental science-driven projects.Collaboration, competition, and pre-competitive science: Reflections on the early years when groups at Berkeley, Saclay, UCSB, NIST, and elsewhere shared results openly, pushing the field forward without cut-throat scooping, before activity moved into more corporate settings around 2010. Martinis emphasizes that many of the hardest scaling problems—especially in materials and fabrication—would benefit from deeper cross-organization collaboration, even as current business constraints limit what can be shared.Papers and research discussed“Energy-Level Quantization in the Zero-Voltage State of a Current-Biased Josephson Junction” – John M. Martinis, Michel H. Devoret, John Clarke, Physical Review Letters 55, 1543 (1985). First clear observation of quantized energy levels and macroscopic quantum tunneling in a Josephson circuit, forming a core part of the work recognized by the 2025 Nobel Prize in Physics. Link: https://link.aps.org/doi/10.1103/PhysRevLett.55.1543“Quantum Mechanics of a Macroscopic Variable: The Phase Difference of a Josephson Junction” – J. Clarke et al., Science 239, 992 (1988). Further development of macroscopic quantum tunneling and wave-packet dynamics in current-biased Josephson junctions, demonstrating that a circuit-scale degree of freedom behaves as a quantum variable. Link (PDF via Cleland group):
Thomas Monz, CEO of AQT (Alpine Quantum Technologies), joins Sebastian Hassinger on The New Quantum Era to chart the evolution of ion-trap quantum computing — from the earliest breakthroughs in Innsbruck to the latest roll-outs in supercomputing centers and on the cloud. Drawing on a career that spans pioneering research and entrepreneurial grit, Thomas details how AQT is bridging the gap between academic innovation and practical, scalable systems for real-world users. The conversation traverses AQT’s trajectory from component supplier to systems integrator, how standard 19-inch racks and open APIs are making quantum computing accessible in Europe’s top HPC centers, what Thomas anticipates from AQT launching on Amazon Braket, a quantum computing service from AWS, and what it will take for quantum to deliver genuine economic value.Guest Bio  Thomas Monz is the CEO and co-founder of AQT. A physicist by training, his work has helped transform trapped-ion quantum computing from a fundamental research topic into a commercially viable technology. After formative stints in quantum networks, high-precision measurement, and hands-on engineering, Thomas launched AQT alongside Peter Zoller and Rainer Blatt to make robust, scalable quantum computers available far beyond the university lab. He continues to be deeply engaged in both hardware development and quantum error correction research, with AQT now deploying systems at EuroHPC centers and bringing devices to Amazon Braket.Key Topics  From research prototype to rack-ready: How the pain points converting lab experiments into user-friendly hardware led AQT to build its quantum computers in the same form factors and standards as classical infrastructure, making plug-and-play integration with the supercomputing world possible.  Hybrid quantum–HPC deployments: Why systems-level thinking and classic IT lessons (such as respecting 19-inch rack and power standards) have enabled AQT to place ion-trap quantum computers in Germany and Poland as part of the EuroHPC initiative — and why abstraction at the API level is essential for developer adoption.  Error correction and code flexibility: How the physical properties of trapped ions let AQT remain agnostic to changing error-correcting codes (from repetition and surface codes to LDPC), enabling swift adaptation to new breakthroughs via software rather than expensive new hardware — and why end-users should never have to think about error correction themselves.  Scaling and networking: The challenges moving from one-dimensional to two-dimensional traps, the emerging role of integrated photonics, and AQT’s vision for interconnecting quantum computers within and across HPC sites using telecom-wavelength photons.  From local to cloud: What AQT’s move to Amazon Braket means for the range and sophistication of end-user applications, and how broad commercial access is shifting priorities from scientific exploration to real-world performance and customer-driven features.  Collaboration as leverage: How AQT’s open approach to integration—letting partners handle job scheduling, APIs, and orchestration—positions it as a technology supplier while benefiting from advances across Europe’s quantum ecosystem.Why It Matters  AQT’s journey illustrates how “physics-first” quantum innovation is finally crossing into scalable, reliable real-world systems. By prioritizing integration, user experience, and abstraction, AQT is closing the gap between experimental platforms and actionable quantum advantage. From better error rates and hybrid deployments to global cloud infrastructure, the work Thomas describes signals a maturing industry rapidly moving toward both commercial impact and new scientific discoveries.Episode Highlights  How Thomas’s PhD work helped implement the first three-qubit ion-trap gates and formed the foundation for AQT’s technical strategy.  The pivotal insight: moving from bespoke lab systems to standardized products allowed quantum hardware to be deployed at scale.  The surprisingly smooth physical deployment of AQT machines across Europe, thanks to a “box-on-a-truck” design.  Real talk on error correction, the importance of LDPC codes, and the flexibility built into trapped-ion architectures.  The future of quantum networking: sending entangled photons between HPC facilities, and the promise of scalable cluster architectures.  What cloud access brings to the roadmap, including new end-user requirements and opportunities for innovation in error correction as a service.---- This episode offers an insider’s perspective on the tight coupling of science and engineering required to bring quantum computing out of the lab and into industry. Thomas’s journey is a case study in building both technology and market readiness — critical listening for anyone tracking the real-world ascent of quantum computers. In the spirit of full disclosure, Sebastian is an employee of AWS, working on quantum computing for the company, though he is not a member of the Braket service team. 
Quantum Materials and Nano-Fabrication with Javad ShabaniGuest: Dr. Javad Shabani is Professor of Physics at NYU, where he directs both the Center for Quantum Information Physics and the NYU Quantum Institute. He received his PhD from Princeton University in 2011, followed by postdoctoral research at Harvard and UC Santa Barbara in collaboration with Microsoft Research. His research focuses on novel states of matter at superconductor-semiconductor interfaces, mesoscopic physics in low-dimensional systems, and quantum device development. He is an expert in molecular beam epitaxy growth of hybrid quantum materials and has made pioneering contributions to understanding fractional quantum Hall states and topological superconductivity.Episode OverviewProfessor Javad Shabani shares his journey from electrical engineering to the frontiers of quantum materials research, discussing his pioneering work on semiconductor-superconductor hybrid systems, topological qubits, and the development of scalable quantum device fabrication techniques. The conversation explores his current work at NYU, including breakthrough research on germanium-based Josephson junctions and the launch of the NYU Quantum Institute.Key Topics DiscussedEarly Career and Quantum JourneyJavad describes his unconventional path into quantum physics, beginning with a double major in electrical engineering and physics at Sharif University of Technology after discovering John Preskill's open quantum information textbook. His graduate work at Princeton focused on the quantum Hall effect, particularly investigating the enigmatic five-halves fractional quantum Hall state and its potential connection to non-abelian anyons.From Spin Qubits to Topological Quantum ComputingDuring his PhD, Javad worked with Jason Petta and Mansur Shayegan on early spin qubit experiments, experiencing firsthand the challenge of controlling single quantum dots. His postdoctoral work at Harvard with Charlie Marcus focused on scaling from one to two qubits, revealing the immense complexity of nanofabrication and materials science required for quantum control. This experience led him to topological superconductivity at UC Santa Barbara, where he collaborated with Microsoft Research on semiconductor-superconductor heterostructures.Planar Josephson Junctions and Material InnovationAt NYU, Javad's group developed planar two-dimensional Josephson junctions using indium arsenide semiconductors with aluminum superconductors, moving away from one-dimensional nanowires toward more scalable fabrication approaches. In 2018-2019, his team published groundbreaking results in Physical Review Letters showing signatures of topological phase transitions in these hybrid systems.Gatemon Qubits and Hybrid SystemsThe conversation explores Javad's recent work on gatemon qubits—gate-tunable superconducting transmon qubits that leverage semiconductor properties for fast switching in the nanosecond regime. While indium arsenide's piezoelectric properties may limit qubit coherence, the material shows promise as a fast coupler between qubits. This research, published in Physical Review X, represents a convergence of superconducting circuit techniques with semiconductor physics.Breakthrough in Germanium-Based DevicesJavad reveals exciting forthcoming research accepted in Nature Nanotechnology on creating vertical Josephson junctions entirely from germanium. By doping germanium with gallium to make it superconducting, then alternating with undoped semiconducting germanium, his team has achieved wafer-scale fabrication of three-layer superconductor-semiconductor-superconductor junctions. This approach enables placing potentially 20 million junctions on a single wafer, opening pathways toward CMOS-compatible quantum device manufacturing.NYU Quantum Institute and Regional EcosystemThe episode discusses the launch of the NYU Quantum Institute under Javad's leadership, designed to coordinate quantum research across physics, engineering, chemistry, mathematics, and computer science. The Institute aims to connect fundamental research with application-focused partners in finance, insurance, healthcare, and communications throughout New York City. Javad describes NYU's quantum networking project with five nodes across Manhattan and Brooklyn, leveraging NYU's distributed campus fiber infrastructure for short-distance quantum communication.Academic Collaboration and the New York Quantum EcosystemJavad explains how NYU collaborates with Columbia, Princeton, Yale, Cornell, RPI, Stevens Institute, and City College to build a Northeast quantum corridor. The annual New York Quantum Summit (now in its fourth year) brings together academics, government labs including AFRL and Brookhaven, consulting firms, and industry partners. This regional approach complements established hubs like the Chicago Quantum Exchange while addressing New York's unique strengths in finance and dense urban infrastructure.Materials Science Challenges and InterfacesThe conversation delves into fundamental materials science puzzles, particularly the asymmetric nature of material interfaces. Javad explains how material A may grow well on material B, but B cannot grow on A due to polar interface incompatibilities—a critical challenge for vertical device fabrication. He draws parallels to aluminum oxide Josephson junctions, where the bottom interface is crystalline but the top interface grows on amorphous oxide, potentially contributing to two-level system noise.Industry Integration and Practical ApplicationsJavad discusses NYU's connections to chip manufacturing through the CHIPS Act, linking academic research with 200-300mm wafer-scale operations at NY Creates. His group also participates in the Co-design Center for Quantum Advantage (C2QA)  based at Brookhaven National Laboratory.Notable Quotes"Behind every great experimentalist, there is a greater theorist.""A lot of these kind of application things, the end users are basically in big cities, including New York...people who care at finance financial institutions, people like insurance, medical for sensing and communication.""You don't wanna spend time on doing the exact same thing...but I do feel we need to be more and bigger."
Vijoy Pandey joins Sebastian Hassinger for this episode of The New Quantum Era to discuss Cisco's ambitious vision for quantum networking—not as a far-future technology, but as infrastructure that solves real problems today. Leading Outshift by Cisco, their incubation group and Cisco Research, Vijoy explains how quantum networks are closer than quantum computers, why distributed quantum computing is the path to scale, and how entanglement-based protocols can tackle immediate classical challenges in security, synchronization, and coordination. The conversation spans from Vijoy's origin story building a Hindi chatbot in the late 1980s to Cisco's groundbreaking room-temperature quantum entanglement chip developed with UC Santa Barbara, and explores use cases from high-frequency trading to telescope array synchronization.Guest BioVijoy Pandey is Senior Vice President at Outshift by Cisco, the company's internal incubation group, where he also leads Cisco Research and Cisco Developer Relations (DevNet). His career in computing began in high school building AI chatbots, eventually leading him through distributed systems and software engineering roles including time at Google. At Cisco, Vijoy oversees a portfolio spanning quantum networking, security, observability, and emerging technologies, operating at the intersection of research and product incubation within the company's Chief Strategy Office.Key TopicsFrom research to systems: How Cisco's quantum work is transitioning from physics research to systems engineering, focusing on operability, deployment, and practical applications rather than building quantum computers.The distributed quantum computing vision: Cisco's North Star is building quantum network fabric that enables scale-out distributed quantum computing across heterogeneous QPU technologies (trapped ion, superconducting, etc.) within data centers and between them—making "the quantum network the solution" to quantum's scaling problem and classical computing's physics problem.Room-temperature entanglement chip: Cisco and UC Santa Barbara developed a prototype photonic chip that generates 200 million entangled photon pairs per second at room temperature, telecom wavelengths, and less than 1 milliwatt power—enabling deployment on existing fiber infrastructure without specialized equipment.Classical use cases today: How quantum networking protocols solve present-day problems in synchronization (global database clocks, telescope arrays), decision coordination (high-frequency trading across geographically distributed exchanges), and security (intrusion detection using entanglement collapse) without requiring massive qubit counts or cryogenic systems.Quantum telepathy for HFT: The concept of using entanglement and teleportation to coordinate decisions across locations faster than the speed of light allows classical communication—enabling fairness guarantees for high-frequency trading across data centers in different cities.Meeting customers where they are: Cisco's strategy to deploy quantum networking capabilities alongside existing classical infrastructure, supporting a spectrum from standard TLS to post-quantum cryptography to QKD, rather than requiring greenfield deployments.The transduction grand challenge: Why building the "NIC card" that connects quantum processors to quantum networks—the transducer—is the critical bottleneck for distributed quantum computing and the key technical risk Cisco is addressing.Product-company fit in corporate innovation: How Outshift operates like internal startups within Cisco, focusing on problems adjacent to the company's four pillars (networking, security, observability, collaboration) with both technology risk and market risk, while maintaining agility through a framework adapted from Cisco's acquisition integration playbook.Why It MattersCisco's systems-level approach to quantum networking represents a paradigm shift from viewing quantum as distant future technology to infrastructure deployable today for specific high-value use cases. By focusing on room-temperature, telecom-compatible entanglement sources and software stacks that integrate with existing networks, Cisco is positioning quantum networking as the bridge between classical and quantum computing worlds—potentially accelerating practical quantum applications from decades away to 5-10 years while solving immediate enterprise challenges in security and coordination.Episode HighlightsVijoy's journey from building Hindi chatbots on a BBC Micro in the late 1980s to leading quantum innovation at Cisco. Why quantum networking is "here and now" while quantum computing is still being figured out. The spectrum of quantum network applications: from near-term classical coordination problems to the long-term quantum internet connecting quantum data centers and sensors. How entanglement enables provable intrusion detection on standard fiber networks alongside classical IP traffic. The "step function moment" coming for quantum: why the transition from physics to systems engineering means a ChatGPT-like breakthrough is imminent, and why this one will be harder to catch up on than software-based revolutions. Design partner collaborations with financial services, federal agencies, and energy companies on security and synchronization use cases.Cisco's quantum software stack prototypes: Quantum Compiler (for distributed quantum error correction), Quantum Alert (security), and QuantumSync (decision coordination)."
This episode is a first for the show - a repeat of a previously posted interview on The New Quantum Era podcast! I think you'll agree the reason for the repeat is a great one - this episode, recorded at the APS Global Summit in March, features a conversation John Martinis, co-founder and CTO of QoLab and newly minted Nobel Laureate! Last week the Royal Swedish Academy of Sciences made an announcement that John would share the 2025 Nobel Prize for Physics with John Clarke and Michel Devoret “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit.” It should come as no surprise that John and I talked about macroscopic quantum mechanical tunnelling and energy quantization in electrical circuits, since those are precisely the attributes that make a superconducting qubit work for computation.  The work John is doing at Qolab, a superconducting qubit company seeking to build a million qubit device, is really impressive, as befits a Nobel Laureate and a pioneer in the field. In our conversation we explore the strategic shifts, collaborative efforts, and technological innovations that are pushing the boundaries of quantum computing closer to building scalable, million-qubit systems. Key HighlightsEmerging from Stealth Mode & Million-Qubit System Paper:Discussion on QoLab’s transition from stealth mode and their comprehensive paper on building scalable million-qubit systems.Focus on a systematic approach covering the entire stack.Collaboration with Semiconductor Companies:Unique business model emphasizing collaboration with semiconductor companies to leverage external expertise.Comparison with bigger players like Google, who can fund the entire stack internally.Innovative Technological Approaches:Integration of wafer-scale technology and advanced semiconductor manufacturing processes.Emphasis on adjustable qubits and adjustable couplers for optimizing control and scalability.Scaling Challenges and Solutions:Strategies for achieving scale, including using large dilution refrigerators and exploring optical communication for modular design.Plans to address error correction and wiring challenges using brute force scaling and advanced materials.Future Vision and Speeding Up Development:QoLab’s goal to significantly accelerate the timeline toward achieving a million-qubit system.Insight into collaborations with HP Enterprises, NVIDIA, Quantum Machines, and others to combine expertise in hardware and software.Research Papers Mentioned in this Episode:Position paper on building scalable million-qubit systems 
Pierre Desjardins is the cofounder of C12, a Paris-based quantum computing hardware startup that specializes in carbon nanotube-based spin qubits. Notably, Pierre founded the company alongside his twin brother, Mathieu, making them the only twin-led deep-tech startups that we know of! Pierre’s journey is unconventional—he is a rare founder in quantum hardware without a PhD, drawing instead on engineering and entrepreneurial experience. The episode dives into what drew him to quantum computing and the pivotal role COVID-19 played in catalyzing his career shift from consulting to quantum technology.C12’s Technology and Unique AngleC12 focuses on developing high-performance qubits using single-wall carbon nanotubes. Unlike companies centered on silicon or germanium spin qubits, C12 fabricates carbon nanotubes, tests them for impurities, and then assembles them on silicon chips as a final step. The team exclusively uses isotopically pure carbon-12 to minimize magnetic and nuclear spin noise, yielding a uniquely clean environment for electron confinement. This yields ultra-low charge noise and enables the company to build highly coherent qubits with remarkable material purity.Key Technical InnovationsSpin-Photon Coupling: C12’s system stands out for driving spin qubits using microwave photons, drawing inspiration from superconducting qubit architectures. This enables the implementation of a “quantum bus”—a superconducting interconnect that allows long-range coupling between distant qubits, sidestepping the scaling bottleneck of nearest-neighbor architectures.Addressable Qubits: Each carbon nanotube qubit can be tuned on or off the quantum bus by manipulating the double quantum dot confinement, providing flexible connectivity and the ability to maximize coherence in a memory mode.Stability and Purity: Pierre emphasizes that C12’s suspended architecture dramatically reduces charge noise and results in exceptional stability, with minimal calibration drift, over years-long measurement campaigns—a stark contrast with many superconducting platforms.Recent MilestonesC12 celebrated its fifth anniversary and recently demonstrated the first qubit operation on their platform. The company achieved ultra-long coherence times for spin qubits coupled via a quantum bus, publishing these results in *Nature*. The next milestone is demonstrating two-qubit gates mediated by microwave photons—a development that could set a new benchmark for both C12 and the wider quantum computing industry.Challenges and OutlookC12’s current focus is scaling up from single-qubit demonstrations to multi-qubit gates with long-range connectivity, a crucial step toward error correction and practical algorithms. Pierre notes the rapid evolution of error-correcting codes, remarking that some codes they are now working on did not exist two years ago. The interview closes with an eye on the race to demonstrate long-distance quantum gates, with Pierre hoping C12 will make industry headlines before larger competitors like IBM.Notable Quotes“The more you dig into this technology, the more you understand why this is just the way to build a quantum computer.”“We have the lowest charge noise compared to any kind of spin qubit—this is because of our suspended architecture.”“What we introduced is the concept of a quantum bus… really the only way to scale spin qubits.”Episode ThemesEntrepreneurship in deep tech without a traditional research backgroundTechnical deep dive on carbon nanotube spin qubits and quantum bus architectureMaterials science as the foundation of scalable quantum hardwareThe importance of coherence, noise reduction, and tunable architectures in quantum system designThe dynamic evolution of error correction and industry competitionListeners interested in cutting-edge hardware, quantum startup journeys, or the science behind scalable qubit platforms will find this episode essential. Pierre provides unique clarity on why C12’s approach offers both conceptual and practical advantages for the future of quantum computing,
Dr. Eli Levenson-Falk joins Sebastian Hassinger, host of The New Quantum Era to discuss his group’s recent advances in quantum measurement and control, focusing on a new protocol that enables measurements more sensitive than the Ramsey limit. Published in Nature Communications in April 2025, this work demonstrates a coherence stabilized technique that not only enhances sensitivity for quantum sensing but also promises improvements in calibration speed and robustness for superconducting quantum devices and other platforms. The conversation travels from Eli’s origins in physics, through the conceptual challenges of decoherence, to experimental storytelling, and highlights the collaborative foundation underpinning this breakthrough.Guest BioEli Levenson-Falk is an Associate Professor at USC. He earned his PhD at UC Berkeley with Professor Irfan Siddiqui, and now leads an experimental physics research group working with superconducting devices for quantum information science. Key TopicsThe new protocol described in the paper: “Beating the Ramsey Limit on Sensing with Deterministic Qubit Control." Beyond the Ramsey measurement: How the team’s technique stabilizes part of the quantum state for enhanced sensitivity—especially for energy level splittings—using continuous, slowly varying microwave control, applicable beyond just superconducting platforms. From playground swings to qubits: Eli explains how the physics of a playground swing inspired his passion for the field and lead to his understanding of the transmon qubit, and why analogies matter for intuition. Quantum decoherence and stabilization: How the method controls the “vector” of a quantum state on the Bloch sphere, dumping decoherence into directions that can be tracked or stabilized, markedly increasing measurement fidelity. Calibration and practical speedup: The protocol achieves greater measurement accuracy in less time or greater accuracy for a given time investment. This has implications for both calibration routines in quantum computers and for direct quantum measurements of fields (e.g., magnetic) or material properties. Applicability: While demonstrated on superconducting transmons, the protocol’s generality means it may bring improved sensitivity to a variety of platforms—though the greatest benefits will be seen where relaxation processes dominate decoherence over dephasing. Collaboration and credit: The protocol was the product of a collaborative effort with theorist Daniel Lidar and his group, also at USC. In Eli's group, Malida Hecht conducted the experiment.Why It MattersBy breaking through the Ramsey sensitivity limit, this work provides a new tool for both quantum device calibration and quantum sensing. It allows for more accurate and faster frequency calibration within quantum processors, as well as finer detection of small environmental changes—a dual-use development crucial for both scalable quantum computing and sensitive quantum detection technologies.Episode Highlights Explanation of the “Ramsey limit” in quantum measurement and why surpassing it is significant. Visualization of quantum states using the Bloch sphere, and the importance of stabilizing the equatorial (phase) components for sensitivity. Experimental journey from “plumber” lab work to analytic insights, showing the back-and-forth of theory confronting experiment. Immediate and future impacts, from more efficient calibration in quantum computers to potentially new standards for quantum sensing. Discussion of related and ongoing work, such as improvements to deterministic benchmarking for gate calibration, and the broader applicability to various quantum platforms.If you enjoy The New Quantum Era, subscribe and tell your quantum-curious friends! Find all episodes at www.newquantum.era.com.
Assistant Professor Mohammad Mirhosseini (Caltech EE/APh) explains how his group built a mechanical quantum memory that stores microwave-photon quantum states far longer than typical superconducting qubits, and why that matters for hybrid quantum architectures. The discussion covers microwave photons, phonons, optomechanics, coherence versus lifetime (T2 vs. T1), current speed bottlenecks, and implications for quantum transduction and error mechanisms. The discussion centers on a paper from Mirhosseini's paper from December of 2024 titled, “A mechanical quantum memory for microwave photons,” detailing strong coupling between a transmon and a long‑lived nanomechanical oscillator for storage and retrieval of nonclassical states.GuestMohammad Mirhosseini is an Assistant Professor of Electrical Engineering and Applied Physics at Caltech, where his group engineers hybrid superconducting–phononic–photonic systems at millikelvin temperatures for computing, communication, and sensing. He completed his PhD at the University of Rochester’s Institute of Optics and was a postdoc in Oscar Painter’s group at Caltech before starting his lab. His recent team effort demonstrates mechanical oscillators as compact, long‑lived quantum memories integrated with superconducting circuits.Key topicsWhat “microwave photons” are and how qubits emit/absorb single microwave photons in circuit QED analogously to atoms and optical photons.Why “memory” is missing in today’s quantum processors and how a dedicated long‑lived storage element can complement fast but dissipative superconducting qubits.Optomechanics 101: mapping quantum states between electrical and mechanical degrees of freedom, with phonons as the quantized vibrational excitations.T1 vs. T2: demonstrated order‑of‑magnitude gains in lifetime (T1) and more modest current gains in coherence (T2), plus paths to mitigate dephasing.Present bottleneck: state conversion between qubit and oscillator is about 100× slower than native superconducting operations, with clear engineering avenues to speed up.Quantum transduction: leveraging the same mechanical intermediary to bridge microwave and optical domains for interconnects and networking.Two‑level system (TLS) defects: shared decoherence mechanisms across mechanical oscillators and superconducting circuits and why comparing both can illuminate materials limits.Why it mattersHybrid architectures that pair fast processors with long‑lived memories are a natural route to scaling, and mechanical oscillators offer lifetimes far exceeding conventional superconducting storage elements while remaining chip‑integrable.. Demonstrating nonclassical state storage and retrieval with strong qubit–mechanics coupling validates mechanical oscillators as practical quantum memories and sets the stage for on‑chip transduction. Overcoming current speed limits and dephasing would lower the overhead for synchronization, buffering, and possibly future fault‑tolerant protocols in superconducting platforms.Episode highlightsA clear explanation of microwave photons and how circuit QED lets qubits create and absorb them one by one.Mechanical memory concept: store quantum states as phonons in a gigahertz‑frequency nanomechanical oscillator and read them back later.Performance today: roughly 10–30× longer T1 than typical superconducting qubits with current T2 gains of a few×, alongside concrete strategies to extend T2.Speed trade‑off: present qubit–mechanics state transfer is ~100× slower than native superconducting gates, but device design and coupling improvements are underway.Roadmap: tighter coupling for in‑oscillator gates, microwave‑to‑optical conversion via the same mechanics, and probing TLS defects to inform both mechanical and superconducting coherence.
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Comments (1)

Omid Hassasfar

Fantastic episode! Toby's perspective on the practical applications of quantum computing is exactly the kind of realistic insight we need to hear more often.

Sep 18th
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