Quantum Computing

Claude Slashes Quantum Circuit Costs, but the Viral 17x Figure Needs Context

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Claude Slashes Quantum Circuit Costs, but the Viral 17x Figure Needs Context

Anthropic and Harvard researchers have published results showing that Claude, working largely unsupervised, can rewrite the programs that describe quantum circuits so they consume less of the two resources that matter most: Toffoli gates and logical qubits. Across eight computational primitives drawn from chemistry, optimisation, quantum simulation, number theory and numerical computing, the model beat … Read more

Willow Chip Cuts Magic-State Errors 40-Fold, Reshaping Quantum Economics

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Willow Chip Cuts Magic-State Errors 40-Fold, Reshaping Quantum Economics

Google Quantum AI has dragged one of quantum computing’s least glamorous chores off the whiteboard and onto real silicon. In a paper published in Science on 15 October, the company’s researchers report that a technique called magic state cultivation works on the Willow processor, cutting state-preparation errors by roughly 40-fold and lifting logical fidelity for … Read more

IBM and Five Universities Show Quantum Chip Holding Coherence for 5,000 Operations

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IBM and Five Universities Show Quantum Chip Holding Coherence for 5,000 Operations

A superconducting quantum processor can now hold its coherence long enough to run roughly 5,000 consecutive two-qubit operations plus 5,000 measurement-and-reset cycles without collapsing. That is the headline finding from IBM and five US academic institutions in Nature Physics — and it points to an error-correction mechanism that seems to grow stronger, not weaker, as … Read more