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Microsoft Quantum Computing 'Breakthrough' Faces Fresh Challenge
An anonymous reader shares a report: A physicist has cast doubt on a test that underlies a high-profile claim by Microsoft to have created the first 'topological qubits', a long-sought goal of the company's quantum computing effort. The critique comes amid mounting speculation about the validity of ...
An anonymous reader shares a report: A physicist has cast doubt on a test that underlies a high-profile claim by Microsoft to have created the first 'topological qubits', a long-sought goal of the company's quantum computing effort. In the latest critique, posted as a preprint, Henry Legg, a theoretical physicist at the University of St Andrews, UK, raises concerns about a test that Microsoft uses to look for Majoranas, so-far undiscovered quasiparticles arising from the collective behaviour of electrons that are needed for the topological qubits to work. Severini wrote that Microsoft's underlying scientific paper, released in Nature, "doesn't actually demonstrate" the claimed achievement and only showed that the new chip "could potentially enable future experiments."
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