Topic
Field of research and engineering building quantum hardware and algorithms, aiming toward computers that outperform classical ones on real tasks.
Anthropic says Claude designed a quantum circuit with 17 times fewer gates after a 53-hour experiment with Harvard and QuEra researchers. The cost is 12 percent more qubits than the smallest earlier design, so the saving helps only teams that can spare them.
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Anthropic says Claude Mythos 5 beat prior quantum circuit designs on seven of eight tasks, with up to 17 times fewer gates in one case. The scores are automated gate and qubit counts, and the circuit behind the 17x needed slightly more qubits.
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Google Quantum AI cut errors in the magic states made on its Willow chip roughly 40-fold, using a technique called cultivation. The states still fail about once in 10,000 attempts, Scientific American reported, against one in a million or better for simulating molecules.
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Google Quantum AI says magic state cultivation cut errors about 40x on its Willow chip, in a result published in Science. The up-to-95% overhead figure is an older estimate, and Google says the protocol still needs a larger-scale demonstration.
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RIKEN researchers held gate fidelity above 99.99% with three silicon spin qubits running at once on a shared microwave line. With all five driven it falls to about 99.9%, a level the RIKEN account calls close to what fault-tolerant computing needs.
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Edinburgh-led researchers built an algorithm that runs photonic quantum simulations on standard computers at around 5% of the compute, the team says. If the figure holds, groups without supercomputer access can test how error-prone photonic hardware behaves.
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Mark Martirez, a staff research scientist at the Princeton Plasma Physics Laboratory, simulates diamond qubit defects as isolated clusters of 16 to 30 atoms. Simulation turned up boron- and oxygen-based defects that could make useful qubits. They are candidates until someone grows and measures them.
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IonQ agreed to buy cybersecurity firm Elisity for up to $1.3 billion in stock, including up to $150 million in earn-outs. IonQ says the purchase opens enterprise and government channels for its quantum offerings.
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Two physicists at IIT (BHU) show a black-hole-inspired teleportation protocol reaches high fidelity without quantum magic. The result is a mathematical analysis, so the lower resource bar holds on paper until someone runs it on hardware.
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The Institute of Physics has given Ignacio Cirac its 2026 Isaac Newton Medal and Prize. Physics World, the IOP's own magazine, links it to his 1990s trapped-ion proposal with Peter Zoller.
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Amazon, IBM and the White House expect the first fault-tolerant quantum computers around 2028 or 2029, a timeline that has shortened in recent years. Investors have followed, pushing IonQ up more than 300% since 2024, well before any fault-tolerant machine exists.
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Illinois physicists extend closed-system stability rules to open quantum systems in Physical Review X, splitting phases an older method grouped together. The work is pure theory, and its value for noise-prone quantum hardware depends on whether experiments can tell the newly separated phases apart.
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The Pentagon is committing about $350 million to quantum computing aimed at military logistics, advanced materials and next-generation weapons. For vendors, the related money with a stated purpose so far pays to build quantum hardware.
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Rutgers and IBM researchers reset qubits almost 5,000 times mid-calculation to push a 100-qubit chain from chaos into order. Present-day hardware can run the repeated loop that error correction depends on, though the demonstration stops short of a fault-tolerant machine.
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Nvidia committed $1 billion over five years to US science research tied to the Trump administration's Genesis Mission. It has not published how the money splits, so labs and cloud buyers cannot yet tell who gets compute or when.
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PsiQuantum has won a conditional Pentagon commitment for a loan of up to $150m to expand its plant in Milpitas, California. PsiQuantum says the money would buy test, assembly and cryogenic equipment for prototypes, The Next Web reported, so it mainly adds capacity to check hardware.
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President Trump's administration put up to $215 million behind a fault-tolerant quantum computing contest in a science package of more than $6 billion. Nearly all of it pays out only after a team has a working error-corrected machine, so startups still fund the build privately.
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DARPA moved four quantum firms, Atom Computing, Diraq, IBM and IonQ, into the final stage of its benchmarking programme, joining Microsoft and PsiQuantum. Buyers hearing quantum pitches now get a government check of six designs against a 2033 goal of a machine worth more than it costs.
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Oratomic raised $475m at a $5.4bn valuation, the Wall Street Journal reported, as Gartner forecast more than half of quantum startups will close by 2030. Anyone signing a multi-year quantum contract now has to judge whether the vendor lasts to its own delivery date.
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Universal Quantum, a University of Sussex spin-out, raised more than $100 million in a Series A co-led by DCVC and Firgun Ventures. The money goes into commercialising hardware at a company already delivering a $77 million contract for Germany's DLR, startup.eu reported.
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