Boffin claims Microsoft's supposed quantum leap does not compute due to 'basic Python errors'

Prestigious journal Nature has published a peer-reviewed critique of Microsoft's claims to have made quantum computing breakthroughs – and the scientist who wrote the paper has essentially said Redmond got it wrong.

Microsoft made its claims of a quantum breakthrough in February 2025 when it revealed tech called Majorana and predicted "this breakthrough will allow us to create a truly meaningful quantum computer not in decades, as some have predicted, but in years."

The software giant's approach to quantum computing involves Majorana particles, subatomic particles that scientists have not observed directly. The company has pursued this approach for years, but experienced reversals that led to the retraction of some papers. Last year, however, Microsoft claimed it had both observed Majorana particles and harnessed them in a quantum computer.

Criticism of that claim was swift and sharp: we reportedboffins willing to go on the record as describing Microsoft's work...

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