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#quantum error correction

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Microsoft's Quantum Gamble: The Physics It Still Must Prove

Microsoft announced Majorana 2 with 20-second qubit lifetimes—a 1,000-fold improvement over Majorana 1. But physicists argue the company has never conclusively demonstrated the topological quantum behavior its entire architecture depends on, pointing to a 2021 Nature retraction as evidence of deeper validation problems.

Alex Chen
News

Sydney-IBM Research Maps Path to Quantum Computing Fidelity

A collaboration between researchers at the University of Sydney and IBM has identified and quantified specific sources of error inside quantum gates, ranked them by impact, and demonstrated techniques to suppress them on working hardware. Rather than inventing faster gates, the team provides an engineering roadmap for measuring and addressing the distinct error channels that undermine quantum fidelity.

Kai Nakamura