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Academics spar over Microsoft Majorana 2 quantum chip claims

Academics have raised questions over core technology behind Microsoft’s Majorana 2 quantum chip. University of St Andrews physicist Henry Legg said Microsoft has not proven the existence of topological qubits, arguing that tuning procedures, code errors and missing data undermine the company’s claims. Microsoft rejected the criticism, saying it stands by its results and roadmap and that its work has undergone independent verification through a DARPA benchmarking initiative.