Error Correction

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