A critique published in the journal Nature on June 24, 2026, questions the technology behind Microsoft's Majorana 1 quantum computing chip, which was unveiled in February 2025. Microsoft claimed that the chip utilized a new technology called a topological qubit, which they described as essential for future quantum computing developments. However, physicist Henry Legg from the University of St Andrews reanalyzed Microsoft's data and contended that the company's researchers did not provide conclusive evidence to support their claims. Microsoft also announced the next generation chip, Majorana 2, earlier in June 2026.
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Critique Questions Microsoft's Claims About Majorana 1 Quantum Chip
A recent critique in Nature challenges Microsoft's assertions regarding its Majorana 1 quantum chip, which was introduced in February 2025. The critique, authored by physicist Henry Legg, argues that Microsoft's data lacks conclusive evidence for the claims made about the chip's technology.
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A new paper argues Microsoft exaggerated its quantum claims a year ago
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Critique Questions Microsoft's Claims About Majorana 1 Quantum Chip