#quantumcomputing

Coinbase Prepares Post-Quantum Custody Defenses as Bitcoin Quantum Upgrade Remains Uncertain Coinbase is building quantum-resistant custody infrastructure that can adapt to any post-quantum signature scheme Bitcoin may adopt, says Head of Cryptography Yehuda Lindell. https://newisty.com/blog/coinbase-prepares-post-quantum-custody-defenses-as-bitcoin-quantum-upgrade-remains-uncertain?utm_source=social&utm_campaign=crypto_news #bitcoin #cryptography #quantumcomputing

Data centers in space are a stupid idea. Quantum AI data centers in space are a way stupider one. I have wanted to write this for two years, and an investor's question finally gave me the excuse. In vacuum, the only way to shed heat is radiation. Starcloud's 5 GW proposal needs 10 square kilometers of radiator, about three times Central Park, plus 16 square kilometers of solar panels. So, in short, for this to work we need a structure with the footprint of half of Manhattan and the weight of a Nimitz-class aircraft carrier - seven times the mass of everything currently in Earth orbit combined, parked in a debris field where fragments arrive at 10 km/s, taking hundreds of debris hits a day, with 69,000 kilograms of pressurized glycol per second flowing through the pipes behind those radiators. At 2025's record launch rate, lifting it would take every rocket on Earth 35 years. Every strike on one of those pipes is a catastrophic rupture, not a leak - and at this size it would be hundreds of them per day. No crew. No repair vehicle exists... Few people tried to model the costs and optimistically concluded that orbital compute is 3x to 10x terrestrial. They did not consider one tenth of what is really needed - the coolant plumbing, the 350 GPUs a day that fail under training load and cannot be swapped, the deorbiting of 100,000 tonnes, the resonance problem, and many others. Add those and the real cost for the Starcloud's proposed data center could run in trillions of dollars. And this idea got funded hundreds of millions of dollars? Then someone proposed putting superconducting quantum computers up there. Millikelvin cryostats. Helium-3 from weapons stockpiles (500 fridges would eat two thirds of world supply). Daily calibration by people who cannot reach the hardware. Cosmic rays that crash error correction chip-wide. For a quantum AI advantage nobody has demonstrated on any commercial workload. Hyperscale orbital data centers are decades away, if ever. Nobody pitching quantum AI in orbit has solved a single one of the three problems it stacks. They are counting on the VCs not to ask and to be sufficiently impressed with the concentration of buzzwords. https://postquantum.com/quantum-computing/quantum-ai-data-centers-space/ #QuantumComputing #DataCenters #SpaceTech #QuantumAI #VentureCapital

Weekend Reading care of TechAptitude! Like the global “race” for AI leadership, Quantum Technologies have enormous geo-political dimensions that span multiple domains including national security, technological sovereignty, economic advantage/disadvantage, and military power. In this TechAptitude post we dive into this Geo-Political implications of Quantum Technologies. Enjoy! https://techaptitude.substack.com/p/quantum-technologies-and-geo-politics #Quantum #QuantumComputing #Geo-Politics #TechAmplitude #QuantumTechnologies

If a quantum computer outperforms normal ones, can you tell if it's right? https://arstechnica.com/science/2026/07/if-a-quantum-computer-outperforms-normal-ones-can-you-tell-if-its-right/ #QuantumComputing #Science #Algorithms

#IBM and #Algorithmiq Demonstrate Quantum Advantage, Establishing a Framework for Trusted Quantum Computation Beyond Classical Verification https://newsroom.ibm.com/2026-07-30-ibm-and-algorithmiq-demonstrate-quantum-advantage,-establishing-a-framework-for-trusted-quantum-computation-beyond-classical-verification #quantumcomputing

John Tukey the Fast Fourier Transform (FFT) inventor, who coined both "bit" and "software" died exactly 26 years ago today. The Fast Fourier Transform (FFT), one of the most important algorithms in signal processing and data analysis, was introduced by Tukey & Cooley in 1965. In 1805, Gauss - studying the orbits of asteroids Pallas and Juno - came up with a method to interpolate their trajectories from discrete samples. What he came up with was mathematically very close to the modern FFT but Gauss never published that work, and didn’t analyze its computational complexity. It predated even Fourier’s 1822 work on heat diffusion - but without the framing or generalization that Cooley & Tukey would bring 160 years later. In 1965, Cooley & Tukey published their now-famous algorithm that reduced the cost of computing a Discrete Fourier Transform from 𝑂(𝑛²) to 𝑂(𝑛 log⁡𝑛). This leap made real-time signal processing and digital media compression feasible. From radio telescopes to JPEGs, from audio codecs to quantum mechanics - the FFT is everywhere. It’s one of the most important (and elegant) algorithms of the 20th century - rooted in the genius of Gauss, but brought to life in the computer age. #JohnTukey #FastFourierTransform #FFT #SignalProcessing #ComputerScience #Mathematics #Algorithm #DataScience #DigitalSignalProcessing #FourierTransform #ComputationalScience #ScientificComputing #HistoryOfScience #Innovation #CarlFriedrichGauss #JosephFourier #JamesCooley #STEM #Engineering #ArtificialIntelligence #MachineLearning #QuantumComputing #ImageProcessing #AudioProcessing #Statistics #TechHistory #Computing #Science #InnovationLegacy #OnThisDay

The Atoms That Learned to Fly Researchers just let quantum bits physically fly across a processor mid-calculation — cutting hardware needs from millions of qubits to a few thousand, and opening a real path to curing a currently incurable genetic disease. HELIOX: WHERE EVIDENCE MEETS EMPATHY 🇨🇦 🍎 Apple https://podcasts.apple.com/ca/podcast/heliox-where-evidence-meets-empathy/id1769969487?i=1000778198672 🎵 Spotify https://open.spotify.com/episode/08YtlrGBfG0jfNGbP9gf0d?si=3a23812c7c8c4aa5 ▶️ YouTube https://youtu.be/Hx5y508wwCU 🎧 Listen: https://www.buzzsprout.com/2405788/episodes/19513246-the-atoms-that-learned-to-fly 📖 Read: https://open.substack.com/pub/helioxpodcast/p/the-atoms-that-learned-to-fly 📻 Available for Broadcast on PRX https://exchange.prx.org/pieces/627300-the-atoms-that-learned-to-fly Likely to share: QuEra Computing, Institute for Quantum Computing Waterloo (@quantumiqc), Perimeter Institute #QuantumComputing #Science #Physics #Podcast #DrugDiscovery #OpenScience #TechNews #Rubidium #ScienceMastodon #Fediverse

⏪ Physicists designed a way to make a quantum system's arrow of time point backward. Not time travel. Something weirder and more useful. Every time you measure a quantum system, the measurement kicks it and pumps energy in. A Los Alamos-led team built feedback protocols that can cancel, amplify, or flip that kick. Run it one way and you recover all the energy the measurement added. Run it harder and the system behaves as if time is flowing in reverse. It's basically a working Maxwell's demon, pulling usable energy out of the act of observing. The catch: it's still theory, published in Physical Review X in February, and real measurements today only catch about half the signal, so the perfect version needs better detectors first. Next up: testing it on superconducting qubits, where it could chip away at decoherence, the thing that keeps breaking quantum computers. Paper: https://doi.org/10.1103/l18s-9vmh LANL: https://www.lanl.gov/media/news/0319-reshaping-quantum-arrow #QuantumPhysics #QuantumComputing #Physics

Atomically Thin Materials Significantly Shrink Qubits https://spectrum.ieee.org/2d-hbn-qubit #HackerNews #Tech #QuantumComputing

I have corrected the Grover’s algorithm code at http://crudfactory.com/PHYSICS.html It now takes a predicate closure to tell it what to search for. Before you actually had to give it the answer to get the answer! This was what the inference engine interpreted an ‘Oracle’ to be. Oracles are practically impossible to understand, to me. They come from Turing theory, don’t they? Well, I’m a functional programmer (though I do often write Ada). #computing #quantumComputing #physics #science #mathematics

After the White House quantum summit, I tested the claim that America built "every layer of the quantum stack." Eight layers. Named researchers. Primary sources. Quick scorecard: The PQC algorithms (ML-KEM, ML-DSA, SLH-DSA) that NIST standardized and that EO 14412 mandates for federal systems? Designed almost entirely by Europeans and Canadians. CWI (Netherlands), Bochum (Germany), IBM Zurich (Switzerland), ENS Lyon (France), Waterloo (Canada). NIST ran the process — that's a real institutional win. But the algorithmic content is international. The enabling infrastructure is even more striking. Dilution refrigerators from Finland (Bluefors) and UK (Oxford Instruments) dominate the market that cools US superconducting quantum computers. Domestic manufacturing exists (Maybell in Denver, Bluefors's Syracuse operation) but the US remains substantially dependent on European-headquartered suppliers. Control electronics from Switzerland (Zurich Instruments), Israel (Quantum Machines), Germany (Rohde & Schwarz). The CHIPS Act quantum investments are partly a response to these dependencies. On the science side: Josephson junction predicted at Cambridge (1962). First superconducting qubit demonstrated at NEC Japan (1999). Surface code traces to Kitaev (Russia). Steane code from Oxford. qLDPC codes from French and Russian mathematicians. The US built the strongest commercial integration and scaling layer. That is a real and hard-won capability. It is not the same as sole authorship of the entire stack. Policy implication: "we built everything" leads to different supply chain decisions than "we built the best integration layer, and it depends on allied supply chains." The second framing is more accurate and produces better policy. Full article with every claim sourced: https://postquantum.com/quantum-sovereignty/who-built-the-quantum-stack/ #quantum #PQC #infosec #cryptography #postquantum #supplysecurity #quantumcomputing #cybersecurity

Half of what a cell does is spend energy to stay out of equilibrium. Equilibrium is death. Life isn't a stable state you reach, it's a pump that never turns off. Stop pumping for four minutes and you find out what stability actually means. #Science #Physics #QuantumComputing #Threadverse #Tech

An AI-assisted medical image analysis model that leverages quantum computing to rapidly and accurately diagnose diseases like pneumonia from X-ray scans. #QuantumComputing #ArtificialIntelligence #MedicalPhysics #DiagnosticRadiology #sflorghttps://www.sflorg.com/2026/07/ai07142601.html

Dive into the abyss of techno with "Quantum Breach"! A dark track mixing relentless beats & hacker ethos. Premiered at DEF CON 31! Experience the urgent intensity where code meets rhythm. Die Tastatur is meine Waffe! Listen here: https://activ8te.io/links #techno #cybersecurity #DEFCON #hacking #electronicmusic #quantumcomputing

Quantum-resistant encryption is becoming a chipmaking problem, but why? https://interestingengineering.com/science/quantum-proof-encryption-moving-into-chips #cybersecurity #quantumcomputing #encryption #chips #semiconductors

Quantum error correction can constantly recalibrate a processor https://arstechnica.com/science/2026/07/quantum-error-correction-can-constantly-recalibrate-a-processor/ #QuantumComputing #Science #Tech

🚨 #Privacy emergency! 🚨 We interrupt this quantum computer fanfic to remind you that privacy is a thing—or so says some #Harvard smarty-pants. 🌐💡 Don't worry, though; if the quantum overlords don't get us, Cynthia Dwork just might bore us to death with differential equations. https://scottaaronson.blog/?p=9902 #Emergency #QuantumComputing #CynthiaDwork #DifferentialEquations #HackerNews #ngated

Microsoft’s Topological Quantum Computing Claims Once Again In Question https://hackaday.com/2026/06/30/microsofts-topological-quantum-computing-claims-once-again-in-question/ #HackadayColumns #Science #Fermions #Majorana #Quantumcomputing #Topologicalquantumcomputing