// THE VERGE — INTELLIGENZA ARTIFICIALE
A new paper argues Microsoft exaggerated its quantum claims a year ago
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A peer-reviewed critique of Majorana 1 claims Microsoft did not conclusively demonstrate a working topological qubit. Microsoft disagrees.
A peer-reviewed critique of Majorana 1 claims Microsoft did not conclusively demonstrate a working topological qubit. Microsoft disagrees.
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A critique published in Nature Wednesday calls the basic technology behind Microsoft’s “breakthrough” quantum computing chip the Majorana 1 into question. Microsoft unveiled the chip in February 2025 and said it featured a brand-new technology known as a topological qubit. Topological qubits, they said, would be the “building blocks” for their future quantum computer. Microsoft announced the next generation chip Majorana 2 at Build earlier this month.
But in a peer-reviewed article, Henry Legg, a physicist at the University of St Andrews, reanalyzed Microsoft’s data on their device and argued that the company’s researchers did not conclusively demonstrate a working topological qubit in the first place.
Theory predicts that the electrons in this wire behave in a collective pattern known as a Majorana particle, for which the chip is named.
Proponents of quantum computing predict that the technology’s computational abilities will advance new medicine discovery, encryption, and machine learning. Companies like Google and IBM have already demonstrated more advanced machines than Majorana 1 or 2, although presently, no one has conclusively gotten any quantum computer to perform anything useful. But Microsoft claimed that Majorana 1, and subsequently Majorana 2, paved their path toward a practical quantum computer.