• Quantum EDA for Ion Trap Design with Daniel Faircloth
    Jun 29 2026
    Daniel Faircloth, PhD is an unusual figure in the quantum ecosystem: a computational electromagnetics engineer who actually helped build trapped-ion hardware before pivoting to the software stack the field was missing. He's a co-author on the 2013 New Journal of Physics paper that demonstrated reliable ion transport through a microfabricated X-junction surface-electrode trap at Georgia Tech Research Institute, and he spent the years afterward inside a defense contractor, IERUS Technologies, building the electromagnetic simulation engine that has now spun out as Nullspace.If you've been following the trapped-ion race — Quantinuum, IonQ, Oxford Ionics, AQT, and the academic groups feeding them — this episode fills in a layer of the story that rarely gets airtime. As the field moves from clever physics demonstrations toward genuinely scaled architectures, the design tools, the file formats, and the iteration loops start to matter as much as the qubits themselves. Listeners interested in quantum engineering, the analog of EDA in semiconductors, or how dual-use defense R&D translates into commercial quantum infrastructure will find a lot to chew on.What We Get IntoWhy the standard "gapless approximation" for ion trap modeling — treating electrodes as polygons on an infinite metal sheet — breaks down well before you're ready to fabricate.How Faircloth's graduate-school question ("can better tools turn a good engineer into a super engineer?") became the design philosophy behind Nullspace ES.What turning an X-junction corner actually requires: two-stage optimization across trap geometry and control voltages, so the ion doesn't get heated out of the trap.Why general-purpose electrostatic solvers struggle with ion trap problems that demand nanometer ion-height precision and millivolt-level shuttling voltage accuracy.The technical leap in Nullspace ES 2025 R1: pairing high-order basis functions with a compression solver to cut memory usage roughly 5× while preserving accuracy.The awkward commercial reality of selling neutral simulation infrastructure to companies that are direct competitors with each other.The "build vs. buy" tension for hardware startups deciding whether to roll their own solver in Python or adopt a purpose-built commercial tool.How the dual-use defense / commercial-quantum positioning shapes Nullspace's roadmap — and where lessons flow in both directions.Where the roadmap might lead: multi-physics, tightly integrated workflows that eliminate the CAD-cleanup and file-format-exchange tax engineers pay today.Resources & LinksGuest & CompanyDaniel Faircloth Bio — Nullspace, Inc. — Background on Daniel's path from GTRI and IERUS to co-founding Nullspace.Nullspace, Inc. — Company homepage covering the Nullspace EM and Nullspace ES product suites.Inside Nullspace: Rethinking Electromagnetic Simulation with Dr. Daniel Faircloth — A longer-form interview on why Daniel rebuilt EM simulation from scratch.Product & Technical ResourcesNullspace ES — Electrostatic Simulation for Quantum Computing — Product page detailing the ion-trap-specific capabilities discussed in the episode.Nullspace ES 2025 R1 Tech Brief — The release notes behind the high-order basis functions and 5× memory reduction Daniel describes.Precision Ion Trap Modeling and Simulation for Quantum Applications — Webinar featuring Oxford Ionics' Curtis Volin demonstrating Nullspace ES on a surface-electrode trap.Papers & Background ReadingReliable Transport Through a Microfabricated X-Junction Surface-Electrode Ion Trap (NJP, 2013) — The GTRI paper Daniel co-authored, including the corner-turning ion transport work referenced in the episode.Daniel Faircloth — ResearchGate profile — Additional EM and ion trap publications from Daniel's GTRI/IERUS years.Company & Funding ContextNullspace Raises $2.5M Seed Round (PR Newswire, Aug 2025) — The seed round led by Fathom Fund with Golden Seeds.Nullspace Raises $2.5M — The Quantum Insider — Quantum-sector framing of the dual-use RF/quantum positioning.Nullspace Inc. Launches as an Engineering Software Company (PR Newswire, Jun 2023) — The spin-out announcement and origin story.Key Quotes & InsightsOn the original product question (paraphrase): If you give powerful EM and optimization tools to a well-trained engineer, can you effectively turn them into a "super engineer" and unlock the kind of creativity that textbook parameterizations can't reach? That question became the through-line from Daniel's graduate work to Nullspace.On why existing tools fall short (paraphrase): The community was trying to shoehorn ion trap design into solvers that were never built for it — gapless approximations, weak optimizers, and accuracy levels that simply don't hold up when you need nanometer ion heights and millivolt shuttling voltages.On corner-turning in an X-junction (Daniel, lightly edited): "If you think of an ion trap as a fancy train track system, the ions are being ...
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    39 mins
  • Electrons on Superfluid Helium with Nick Farina
    Jun 22 2026
    EeroQ is unusual in two ways. It's the only company in the world commercializing electrons-on-helium qubits, a modality first proposed by Platzman and Dykman in Science in 1999. And it was founded by Nick Farina — a software entrepreneur, not a physicist — who got pulled into the field through a Chicago theater board where he met his future co-founder, then-PhD student Johannes Pollanen.This conversation matters now because EeroQ has had an unusually productive twelve months: a Physical Review X paper demonstrating single-electron control above 1 Kelvin, a January 2026 result on controlling up to a million electrons with fewer than 50 control lines, and — published in Nature Physics on June 15, 2026 — the first demonstration of strong coupling between a microwave photon and a single electron on helium, the cavity-QED readout-and-control link the platform depends on. If you're trying to understand which "second-tier" modalities deserve serious attention — and how a small, capital-light team in Chicago is thinking about scale-first hardware design — this is a useful listen.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It's time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power.Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post The switch that quantum networking has been waiting for.What We Get IntoHow a Chicago theater board led to one of the most unique qubit companies in the fieldWhy electrons-on-helium failed in the early 2000s and why circuit QED, dry fridges, and CMOS now make it viableThe physical picture: a thin superfluid helium film coating a CMOS chip, with electrons trapped a few nanometers above the surface by their own image chargeWhy EeroQ pivoted from motional states to spin qubits after Steve Lyon (Princeton) joined as CTO — and the predicted 10+ second coherence times that come with itThe "build a quantum computer in reverse" philosophy: starting from a million-qubit architecture and working back toward two-qubit gatesHow the "Wonder Lake" chip controls 2,432 future qubit sites today, and why that's an engineering milestone rather than a qubit countHonest framing of where EeroQ actually is: no two-qubit gate demonstrated yet, with a tape-out target of ~10,000 qubits by late 2028Why dipole-dipole gates come first and exchange gates come later, borrowing from the spin qubit playbookThe case that scaling — not qubit quality — has been the field's slowest-moving problem over the last decadeResources & LinksGuest & CompanyEeroQ — Company site for the only commercial electron-on-helium quantum hardware effort.EeroQ Publications — Peer-reviewed papers and preprints from the team.Building a Quantum Computer in Reverse (EeroQ Blog, July 2023) — Farina's own articulation of the scale-first design philosophy discussed in the episode.Key PapersKoolstra, Glen, Beysengulov et al., "Strong coupling of a microwave photon to an electron on helium," Nature Physics, June 2026 — First demonstration of strong coupling between a microwave photon and the quantized motional state of a single electron on helium, including observation of vacuum Rabi splitting — establishing the cavity-QED readout link at the heart of EeroQ's architecture. This result was under embargo when the episode was recorded.Castoria et al., "Sensing and Control of Single Trapped Electrons Above 1 Kelvin," Physical Review X (2025) — The 1 K result Nick references; demonstrates charge sensing but not yet coherent spin manipulation.Koolstra et al., "High-impedance Resonators for Strong Coupling to an Electron on Helium," Physical Review Applied (Feb 2025) — The resonator architecture underlying EeroQ's cQED control approach.Electron-on-helium qubit (Wikipedia) — Useful overview including the original 1999 Platzman & Dykman Science proposal and Steve Lyon's 2006 spin-qubit paper in Physical Review A.Press & ContextEeroQ Makes World-First Breakthrough in Electron Qubits Floating on Helium (EeroQ, June 2026) — Company announcement of the Nature Physics strong-coupling result.EeroQ Solves the "Wire Problem" (PRNewswire, Jan 2026) — The million-electrons / fewer-than-50-wires result Nick cites.Individual electrons trapped and controlled above 1 K (Phys.org) — Independent coverage of the PRX paper.EeroQ Achieves Tape-Out of "Wonder Lake" Chip (The Quantum Insider, July 2023) — Background on the 2,432-site CMOS chip discussed in the episode.EcosystemChicago Quantum Exchange — The regional consortium EeroQ benefits from.Illinois Quantum and Microelectronics Park — The ...
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    42 mins
  • Quantum Drug Discovery and the Path to Advantage with Sabrina Maniscalco
    Jun 15 2026
    Why This Episode MattersSabrina Maniscalco is one of the few people in quantum who has lived the full arc: two decades of academic work on open quantum systems and non-Markovian noise at Palermo, Turku, Edinburgh, and Helsinki, followed by founding Algorithmiq with three of her former researchers after an early Qiskit Camp. That trajectory matters now because Algorithmiq just had a landmark stretch — sole winner of the $2M Wellcome Leap Q4Bio prize for a quantum-enabled cancer drug discovery workflow, an €18M Series B, a global HQ move to Milan, and its Tensor Network Error Mitigation (TEM) function landing in IBM's Qiskit Functions catalog.If you're trying to make sense of where quantum software actually creates value before fault tolerance arrives — and what a credible "trajectory to advantage" looks like when paired with real clients in life sciences — this is a grounded, technically specific conversation with someone building it.EPISODE SPONSORThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It's time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power.Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post The switch that quantum networking has been waiting for.What We Get IntoWhy a background in open quantum systems and non-Markovian noise turned out to be unusually well-suited to running algorithms on noisy near-term hardwareThe actual science behind the Q4Bio winning workflow: simulating excited-state dynamics of a photosensitizer drug already in Phase II clinical trials, on up to 100 qubitsHow quantum-boosted DMRG works — and why it gives you a built-in benchmark against the best classical method via the bond dimensionThe tradeoff Sabrina would and wouldn't make between more qubits and lower noise, and why neutral atoms' slower sampling rates matter for chemistryWhy even fault-tolerant algorithms like quantum phase estimation still depend on getting state initialization and measurement rightAlgorithmiq's two-product structure: the Digital Quantum Interface (hardware-agnostic infrastructure) and the life sciences application frameworkHow methods built for chemistry are now opening doors into optimization and GenAI — and why that direction emerged from the work, not from a strategy deckWhat the move from Helsinki to Milan signals about the European quantum ecosystem and Algorithmiq's commercial scale-upHow an active learning pipeline is already proposing novel drug variants for synthesis in Prof. Sherri McFarland's labResources & LinksGuest & CompanyAlgorithmiq — The company Sabrina co-founded with Guillermo García-Pérez, Matteo Rossi, and Boris Sokolov; quantum software for life sciences and chemistry.Sabrina Maniscalco — University of Helsinki Research Portal — Publication record covering open quantum systems, non-Markovian dynamics, and quantum information.Sabrina Maniscalco — AI for Good Bio — Consolidated bio covering academic roles and advisory positions, including IQOQI Austria and CERN's Quantum Technology Initiative.The Q4Bio WinAlgorithmiq Wins $2M Wellcome Leap Q4Bio Prize — Company announcement detailing the photodynamic therapy workflow.Wellcome Leap — Q4Bio Prize Announcement — Funder's perspective on finalists and criteria.IBM Quantum Blog — Q4Bio Finalists — IBM's account of the workflow and quantum-classical integration.Funding & HQ MoveTech.eu — Algorithmiq's €18M Series B and Milan move — Coverage of Italy's largest quantum VC round to date.Quantum Computing Report — Algorithmiq Relocates to Milan — Strategic context including the Q4Bio win and IBM partnership.EU-Startups coverage — Investor lineup and Italy's National Quantum Strategy framing.Quantum Advantage & ToolingIBM Quantum Blog — The Dawn of Quantum Advantage — Includes Algorithmiq's TEM (Tensor Network Error Mitigation) function in the Qiskit Functions catalog.Algorithmiq & IBM Quantum Advantage Tracker — The heterogeneous materials experiment Algorithmiq and IBM put forward as a community benchmark.Silicon Republic interview with Sabrina — Useful prior context on her philosophy of using quantum to simulate quantum systems.Key Quotes & InsightsOn the foundation of the company's approach: "We learned very early what we thought were the bottlenecks of quantum computers — what you really need to worry about if you want to implement computation at scale." A direct line from Qiskit Camp Vermont to Algorithmiq's product strategy.On Q4Bio, in Sabrina's words: "This molecule is already in Phase II clinical trial. So it's not hydrogen. It's a real molecule." A ...
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    45 mins
  • Funding the Quantum Middle: Series A/B Capital with Kris Naudts and Zeynep Koruturk of Firgun Ventures
    Jun 8 2026
    Why This Episode MattersFirgun Ventures launched in late 2025 with a $70M first close anchored by the Qatar Investment Authority and a mandate that doesn't exist anywhere else in the market: lead Series A and B rounds in quantum scale-ups globally. Kris Naudts is a neuroscientist and former Culture Trip founder whose path to quantum runs through a near-fatal medical misdiagnosis. Zeynep Koruturk spent over a decade building the Goldman Sachs Tech Initiative and meeting more than a thousand founders. Both were early angels in what became Quantinuum.If you're trying to understand how quantum companies actually get financed between the lab and the IPO window — or why a specialist fund needed to exist at all — this conversation is one of the clearest views available. It's also a useful frame for founders thinking about what an informed institutional investor actually does in a round.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It's time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power.Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post The switch that quantum networking has been waiting for.What We Get IntoWhy Kris's ALS misdiagnosis became the conviction event that pulled him from media entrepreneurship into quantum investingHow Zeynep's decade at Goldman Sachs Tech Initiative shaped her pattern-matching for deep tech, and where that pattern-matching breaks down in quantumThe structural reason Series A/B is the real bottleneck in quantum financing — and why precede and seed capital is no longer the gap people assume it isHow Firgun underwrites engineering and execution risk after the scientific risk is largely retiredWhy a quantum-specialist fund unlocks soft commitments from larger institutions that otherwise stay on the sidelinesThe role of Firgun's "scientific co-founder" Professor Mete Atatüre and the need for sub-specialist diligence across modalitiesHow Firgun thinks about portfolio construction across silicon-spin/photonic (Photonic Inc.), silicon CMOS (Quantum Motion), and other architectures without picking a qubit winnerWhy a truly global mandate is a feature, not a focus problem, given how concentrated quantum talent is in roughly a dozen ecosystemsHow sovereign capital, US equity-stake announcements, and geopolitical fragmentation are starting to reshape who can invest in whatWhy the binary "fault-tolerant or bust" framing of quantum investing misses the gradient of capability that drives near-term valueResources & LinksGuest & FirmFirgun Ventures — The fund's homepage, with the team and "Time to Talk Quantum" podcast featuring the founders' own framing of the market.Firgun Ventures on Crunchbase — Confirms London HQ, global mandate, and Series A/B focus.Fund Launch & ThesisFirgun Ventures Launches $250M VC Fund to Invest in Quantum — The Quantum Insider — Launch details, QIA anchor commitment, and founder backgrounds.Firgun Ventures Launches With $70M for Quantum Tech Innovation — TechFundingNews — Deeper breakdown of the LP roster and market rationale.Firgun Ventures: Scaling Quantum Beyond the Early Stages — Future of Computing — Extended interview with Kris and Zeynep on the Series A/B bottleneck.Portfolio Companies MentionedFirgun Invests in Photonic Inc. — The Quantum Insider — Firgun's first portfolio investment in DARPA-validated Photonic Inc.Photonic Inc.'s World-First Quantum Teleportation — QC Report — Technical context on the "Entanglement First" silicon-spin/photonic architecture.Photonic Inc. Closes $200M+ Round — The Quantum Insider — Final close at a $2B valuation.Quantum Motion Raises $160M Series C — The Quantum Insider — Firgun's first European investment in silicon CMOS quantum computing.Quantum Motion's Silicon CMOS Approach — Technologies.org — Technical analysis of the CMOS scalability thesis.Key Quotes & InsightsKris on the conviction event: "If you're expecting to die and then you're told you're going to live, you have to rethink it yet again… You can go in the direction of enjoy every day, or you can go in the direction of let's try to do something meaningful with whatever time I have left."Zeynep on the real bottleneck: Pre-seed and seed capital in quantum is no longer the gap — the A and B rounds are. Roughly 40% of companies in the space need that bridge to unlock larger institutional capital, and almost no one is set up to lead it.Kris on diligence limits: No one person can underwrite the full quantum stack. Firgun pairs a "scientific co-founder" with sub-specialists for each modality, because ...
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    46 mins
  • Quantum Book Launch with Yuval Boger
    Jun 1 2026
    Why This Episode MattersYuval has a rare profile in the quantum industry: an M.Sc. in physics from Tel Aviv University, an MBA from Kellogg, two decades as a CEO and CMO in deep tech before quantum, and now the commercial lead at QuEra — the company whose neutral-atom architecture is colocated with NVIDIA H100s inside Japan's ABCI-Q supercomputer and just demonstrated 96 logical qubits from 448 physical atoms in Nature. He also hosts The Superposition Guy's Podcast and has just published Quantum Bits, a comic-book guide to quantum computing.This is a crossover conversation — Sebastian's book A New Quantum Era came out the same week — so the episode reads as two practitioners comparing their explanatory strategies, their reading of the modality race, and their honest forecasts for when a quantum computer becomes genuinely non-simulatable. If you want a candid look at how the commercial side of quantum thinks about hardware timelines, error-correction overhead, and the work of translating physics into procurement, this is the episode.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It's time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power.Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post The switch that quantum networking has been waiting for.What We Get IntoWhy Vladan Vuletić's confidence horizon for neutral atoms expanded from 5 years to 10 years in a single 18-month window — and what changedThe honest case for neutral atoms when wall-clock speed is the obvious weakness: parallelism, algorithmic fault tolerance, and a 2:1 physical-to-logical ratio for quantum memoryWhy "time to solution" — not gate speed — is the metric Yuval thinks the industry should be arguing aboutHow Shor's algorithm went from requiring a million qubits to roughly 30,000, and what that compression means for cryptographically relevant timelinesThe craft problem of explaining quantum without saying "zero and one at the same time" — and why both Yuval and Sebastian refused to use itWhat it took to make a quantum comic funny in German (the German is perfect, the joke is not)Sebastian's read on the modality race: neutral atoms short-term, superconducting mid-term, spin and photonics long-term — and Yuval's pushbackWhy Yuval thinks Sebastian's five-year forecast for a non-simulatable machine is pessimisticThe shift inside QuEra from "95% science, 5% everything else" to a company that has to ship serviceable systems and uptimeHow podcasting becomes a business development tool once the microphone is offResources & LinksGuest LinksThe Superposition Guy's Podcast — Yuval's interview show with quantum CEOs and technical leaders across computing, sensing, and communications.Quantum Bits Comics — Yuval's comic-book guide to quantum computing, including custom editions and multilingual versions.QuEra Computing — The neutral-atom quantum computing company where Yuval serves as Chief Commercial Officer.Yuval's published writing — Aggregated Forbes, HPCwire, and Built In bylines on quantum ROI, workforce, and commercialization.Papers & ArticlesQuEra and collaborators on Algorithmic Fault Tolerance (Nature, 2025) — The paper behind the claim that syndrome measurements can happen per algorithmic block rather than per operation.HPCwire coverage of the AFT result — Independent take on the 10–100x runtime overhead reduction.IEEE Spectrum on neutral-atom quantum computing in 2026 — Context for the AIST Gemini deployment and Yuval's time-to-solution argument.2026 Quantum Readiness Report, Part 2 — The survey of 291 stakeholders behind Yuval's "show-me phase" framing of the market.BooksA New Quantum Era by Sebastian Hassinger — Sebastian's outsider's introduction to quantum computing, referenced throughout the conversation.Quantum Bits: A Comic Book Guide to Quantum Computing by Yuval Boger — Yuval's illustrated explainer, with a glossary covering terms from superposition to QLDPC codes.Background Reading MentionedThe Soul of a New Machine by Tracy Kidder — Sebastian's inspiration for the working title of his next book.Key Quotes & InsightsOn the magic of neutral atoms: "We've got this rubidium atoms, we hold them in place using tiny lasers, they're four microns apart, we shoot lasers, and then we take a photograph and see how they're doing. It's science fiction until it isn't."On the modality timeline (Yuval, paraphrasing Vladan Vuletić): Eighteen months ago Vladan was confident about neutral atoms for the next five years. Six months ago, after recent results, that confidence horizon ...
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    55 mins
  • Fault Tolerance for Quantum Inputs and Outputs with Matthias Christandl
    May 25 2026
    Fault Tolerance for Quantum Inputs and Outputs with Matthias ChristandlWhy This Episode MattersMost discussions of fault tolerance quietly assume a classical-in, classical-out picture: you feed in bits, the noisy quantum machine does its work, and a stable classical answer comes out the other side. Christandl — a mathematically trained quantum information theorist who also leads a Novo Nordisk Foundation–funded life sciences center — argues that this framing is too narrow for the era we are actually entering, where multi-core processors, networked QPUs, and quantum communication links all need to exchange quantum information between noisy machines.If you care about how quantum networks, distributed quantum computers, and quantum simulation workflows for chemistry and biology actually get built, this episode lays out a foundational way of thinking about the problem and connects it directly to current hardware and algorithm co-design.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It’s time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power. Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post.What We Get IntoWhy the fault tolerance theorem as usually stated leaves out the case that matters most for networking: quantum inputs and quantum outputs.How Christandl's group shows you can still prepare arbitrarily complex quantum states on a noisy machine, paying only one final layer of physical noise rather than collapsing the whole computation.What this means for restoring meaning to quantum channel capacity results in the presence of noisy encoders and decoders.Why distributed quantum computing — multi-core QPUs talking to each other in quantum, not classical, information — is the natural setting for this work.How recent quantum LDPC code work fits in, and why the team is now focused on making encoders and decoders more space-efficient.Christandl's debate with Gil Kalai: which skeptical assumptions are worth taking seriously, and which he thinks the fault tolerance machinery is robust against.The Quantum for Life workflow: zooming in on the quantum-relevant region of a protein–ligand interaction, running a small quantum simulation, and feeding the result into a classical machine-learning pipeline that needs many such small computations.Why "co-design" has replaced "bridging the gap" as the right metaphor for where quantum hardware and quantum software meet.How quantum sensing — for example, magnetic-field sensing with atomic clouds — could one day deliver genuine quantum inputs into a fault-tolerant quantum computer.Resources & LinksGuest LinksMatthias Christandl — University of Copenhagen Research Portal — Official institutional profile with publications and affiliations.Quantum for Life Center — University of Copenhagen — The Novo Nordisk Foundation–funded center Christandl leads, focused on quantum algorithms for the life sciences.UCPH Quantum Hub launch — The cross-faculty quantum community Christandl helped found at the University of Copenhagen.Christandl appointed 2024 Turing Chair — CWI/QuSoft — Background on his honorary visiting chair at QuSoft and CWI in Amsterdam.Papers & ArticlesFault-Tolerant Coding for Quantum Communication (arXiv:2009.07161) — The foundational paper (IEEE TIT 2024, with Müller-Hermes) that motivates the episode: channel coding when the encoder and decoder circuits themselves are noisy.Fundamental Limit on the Power of Entanglement Assistance in Quantum Communication (arXiv:2408.17290) — Christandl and collaborators settle a 2002 conjecture of Bennett et al. on entanglement-assisted capacity (PRL 2025).Asymptotic tensor rank is characterized by polynomials (arXiv:2411.15789) — STOC 2025 result connecting tensor theory to the matrix multiplication exponent.How to Use Quantum Computers for Biomolecular Free Energies (2026)More Quantum Chemistry with Fewer Qubits — Physical Review Research (2024) — The Quantum for Life paper underlying the protein–ligand workflow discussed in the episode.A Cornerstone of Entanglement Theory Restored — Nature Physics (2025) — Christandl's News & Views on the re-proof of the generalized quantum Stein's lemma.Quantum Duel: Matthias Christandl x Gil Kalai Key Quotes & InsightsOn reframing fault tolerance: Christandl argues that the fault tolerance theorem, as usually stated, assumes classical inputs and outputs — but the most important near-term use cases, from networked QPUs to multi-core processors, need quantum inputs and quantum outputs.On the unavoidable final layer of noise:...
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    39 mins
  • Philosophy of Physics Meets Quantum Engineering with Elise Crull
    May 18 2026
    Philosophy of Physics Meets Quantum Engineering with Elise CrullWhy This Episode MattersElise Crull is Associate Professor of Philosophy at CCNY and the CUNY Graduate Center, co-author with Guido Bacciagaluppi of The Einstein Paradox (Cambridge, 2024), and was named a Fellow of the American Physical Society in 2025 for her archival work recovering voices like Grete Hermann from the foundations of quantum mechanics. She was also one of the speakers on Helgoland in June 2025 for the centenary of quantum mechanics — opening, as Sebastian notes, by thanking the organizers for the courage to invite a philosopher.This conversation matters because the truce between physicists and philosophers of physics is over. Quantum computing has turned interpretive questions — what counts as entanglement, what decoherence really is, whether causal order can be put in superposition — into engineering questions with budget consequences. If you build, fund, or write about quantum hardware, this episode will sharpen how you hear the words being used around you.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It’s time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power. Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post.What We Get IntoWhy "decoherence" and "noise" are not interchangeable, and why error correction strategy depends on telling them apartThe six-plus working definitions of entanglement currently circulating in physics — and why "classical entanglement" makes a philosopher's eye twitchWhat Einstein actually objected to in EPR (hint: it wasn't really determinism), drawn from Schrödinger's "Einstein-Paradoxon" correspondence folderIndefinite causal ordering: whether the experimental speedups reflect genuinely acausal physics or our stubbornly classical definitions of "cause" and "signal"How monogamy of entanglement is only monogamous with respect to a single degree of freedom — and why that nuance is already being exploited in entanglement harvestingWhy "it's just a tool" is the most insidious thing an engineer can say about quantum or AI technologyHow the standard heroic-origin story of quantum mechanics structurally erased experimentalists — many of them women like Hertha Sponer — and what that pattern predicts about quantum computing's own emerging origin storyWhat Grete Hermann did to von Neumann's impossibility proof forty years before anyone listenedWhy Crull thinks the next physical theory, whatever succeeds quantum field theory, is likely to be stranger, not tamerResources & LinksGuest LinksElise Crull — CCNY Faculty Profile — Her institutional home, with current research interests and talks.Elise Crull — CUNY Graduate Center Profile — Full publications list including forthcoming work.Elise Crull — Academia.edu — Preprint archive, including her 2024 Leggett–Garg/Feyerabend paper and earlier decoherence work.Books & PapersThe Einstein Paradox (Bacciagaluppi & Crull, Cambridge UP, 2024) — The archival reconstruction of the debate EPR unleashed; the centerpiece of the conversation.Ryckman's BJPS review of The Einstein Paradox (2025) — A scholarly assessment of what the book changes about how we read 1935."Realism with Quantum Faces: The Leggett–Garg Inequalities as a Case Study for Feyerabend's Views" (Crull, 2024) — Her most recent standalone article on macroscopic realism."Physics Scratches a Philosopher's Itch" — APS Physics (2022) — A feature on her work on indefinite causal ordering and causation.Helgoland & HistoryPhysics World: Helgoland 2025 — the Inside Story — Post-event report on the centenary where Sebastian and Elise first met.AIP: "What Happened on Helgoland" — Historiographical pushback on the Heisenberg origin myth.AIP: Crull on Hertha Sponer and the path to wave/particle duality (2026) — Her most recent piece on how standard histories minimize experimentalists.For General AudiencesStarTalk: "The Philosophy of Physics with Elise Crull" (June 2025) — Crull with Neil deGrasse Tyson, kicking off the Einstein Paradox promotion cycle.StarTalk: "How Quantum Physics Complicates Objective Truth" (April 2026) — A complementary, more recent treatment of the same themes.Key Quotes & InsightsOn what philosophy is for: "Every aspect of science we do requires interpretation, because the world isn't just out there. We make choices about how to encounter it."On decoherence vs. noise: Crull notes the question physicists at Duke recently raised with her — how do you tell the difference between decoherence and noise? — and ...
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    42 mins
  • The Quantum Control Stack with Niels Bultink
    May 11 2026
    Why This Episode MattersNiels Bultink earned his PhD at QuTech under Leonardo DiCarlo, where he performed some of the first real-time feedback experiments on solid-state qubits — the foundational primitive behind quantum error correction. He spun Qblox out of TU Delft in 2018, and has grown it to roughly 140 people serving 150+ customers worldwide, mostly on revenue rather than venture capital, before raising a $26M Series A in 2024.This conversation matters now because the goalposts for useful quantum computing have moved closer in the last 12 months. Recent estimates suggest breaking RSA may need ~10,000–100,000 qubits, not tens of millions — and at that scale, the control stack is no longer a lab afterthought. It is a strategic supply chain question, which is why the DOE just picked Qblox to manufacture Fermilab's QICK platform domestically. If you care about how quantum computers actually get built — the layer between the qubit and the software — this is the episode for you.SponsorThis episode is brought to you by Outshift, Cisco's incubation engine. The need for computational power is rapidly increasing in every sector. From drug discovery to material innovation to complex financial modeling, classical systems are reaching their absolute limits. It’s time for a paradigm shift. The answer is a scalable quantum network, built on open standards and vendor-agnostic architecture. By uniting distributed quantum devices, you unlock limitless computational power.Learn more about the Cisco Universal Quantum Switch at Outshift.com.Go deeper with the blog post.What We Get IntoWhy the IBM Quantum Experience originally needed a meter of rack equipment per qubit, and what had to change architecturally to scale past thatHow a quantum control stack can be genuinely qubit-agnostic — and where modality differences actually live (mostly in the analog front end, not the digital core)Why pre-compiled pulse sequences hit a wall, and how dynamic, adaptive control is a prerequisite for fault tolerance, not a nice-to-haveThe role of Qblox's SYNQ and LINQ protocols in achieving picosecond-level synchronization and low-latency feedback across hundreds of coresWhy FPGAs are the right substrate today, and why the field will need to move toward ASICs as production volumes growThe strategic logic behind manufacturing Fermilab's open-source QICK platform — and how it complements rather than cannibalizes the Qblox ClusterWhat the Quantum Utility Block partnership with QuantWare and Q-CTRL actually delivers, including a full-stack demo built in a weekend at APS March MeetingWhy Qblox opened a Boston HQ and started U.S. manufacturing in Canton, Massachusetts in 2026, and how geopolitics is reshaping quantum supply chainsNiels's read on which qubit modalities are gaining ground fastest right now — including a notable jump in spin qubits and neutral atomsWhat's special about the Dutch quantum ecosystem, and why a value-chain culture produced multiple revenue-driven hardware companiesResources & LinksGuest & CompanyQblox — Delft-based control stack company at the center of this episodeNiels Bultink on Google Scholar — Niels's research record from his QuTech years, useful background on his feedback control workQblox North America HQ announcement — Context for the Boston expansion discussed in the episodeQblox "Made in America" manufacturing announcement — Background on the Canton, MA manufacturing milestonePartnerships DiscussedFermilab × Qblox QICK partnership announcement — The DOE-backed deal for Qblox to manufacture and distribute QICKQuantum Utility Block press release — Joint reference system with QuantWare and Q-CTRL referenced in the episodeAPS 2024 full-stack demo recap — The 48-hour conference-floor build Niels mentionsFoundational Paper"Feedback Control of a Solid-State Qubit Using High-Fidelity Projective Measurement" — Ristè, Bultink et al., the 2012 work that grounds Niels's perspective on real-time controlFunding & Market ContextQblox Series A announcement — Context for the revenue-first growth story discussedThe Quantum Insider on the Series A — Independent coverage with quotes from QuantonationKey Quotes & InsightsOn why the control stack is more than picks and shovels: "Sometimes companies like us are called picks and shovels. It's a nice analogy, but it doesn't hold entirely. The qubits are just the bottom layer of the stack — and all the other layers are also crucial to develop."On flexibility as a requirement, not a feature: Pre-compiled, rigid sequences can't support quantum error correction. Adaptive, real-time control flows aren't a performance upgrade — they're "a basic need for this new era of quantum fault tolerance."On the moving goalposts for useful quantum computing: A year ago, breaking RSA looked like tens of millions of qubits. Recent estimates put it at 10,000–100,000 — "a factor hundred smaller what we now think we need versus a year ago."On the future ...
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    37 mins