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

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 […] ...