Henry Legg Challenges Microsoft's 2029 Quantum Roadmap as Nature Critique Says Topological Qubit May Be Noise
Updated
Updated · Scientific American · Jun 24
Henry Legg Challenges Microsoft's 2029 Quantum Roadmap as Nature Critique Says Topological Qubit May Be Noise
3 articles · Updated · Scientific American · Jun 24
Summary
Nature published Henry Legg’s formal critique arguing Microsoft has not demonstrated a topological qubit and that the signal in its recent paper could simply be noise.
The challenge targets Microsoft’s Nature paper from earlier this month, extending scrutiny of a quantum program that has already retracted earlier peer-reviewed work.
Microsoft said in a Nature response and a separate statement that its measurements support the claim, adding that DARPA advanced the company to the final phase of its Quantum Benchmarking Initiative.
The dispute lands just after Microsoft unveiled its Majorana 2 chip and reiterated a plan for scalable, practical quantum computing by 2029, a timeline Legg says lacks credible underlying physics.