A new paper argues Microsoft exaggerated its quantum claims a year ago

A peer-reviewed critique in Nature reexamines Microsoft’s Majorana 1 data and argues the company did not conclusively prove it had created topological qubits. Microsoft had presented the chip as a breakthrough in February 2025 and recently announced its follow-up, Majorana 2, at Build.

The dispute highlights growing scrutiny of quantum computing claims, especially when companies frame early-stage physics as near-term engineering progress. If the critique holds, Microsoft may face pressure to provide stronger validation before its quantum roadmap gains broader scientific and commercial trust.