
Henry Legg
@PhysicsHenry
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Lecturer (~asst prof) investigating quantum physics @univofstandrews. My opinions belong to 28 highly trained monkeys and are not those of my employer.
St Andrews
Joined December 2013
The German press has been largely very good dealing with @MSFTQuantum’s nonsense. However, a little reminder:. 😡Schottland ist nicht England!😡. 🏴🏴🏴🏴🏴🏴🏴🏴🏴🏴🏴🏴
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2025 Anaheim Global Physics Summit was overwhelmed by nonsensical noise presented by MSFT as evidence of a topological qubit after claiming to the world they had built one. There you go Sankar — I fixed your tweet for you.
2025 Anaheim Global Physics Summit was overwhelmed by nonsensical noise around MSFT quantum claims with no nuanced discussion on how almost-impossibly difficult it is to build a quantum computer in any platform, let alone the Majorana platform, fault-tolerance is ever-elusive.
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My summary slide yesterday: . 1) We do not have a reliable way to detect Majoranas .2) The conductance data shows that there is no clear superconducting gap in these devices . There is no reason to believe the noise presented today has anything to do with a topological qubit.
Microsoft want you to believe this data shows the X measurement of a topological qubit. As an expert in this field here is my scientific take on what I see in this data: 💩💩💩💩💩
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The magnetic field ranges for the topological gap protocol of the two wires in Microsoft’s “tetron” are different. These wires are on the same chip! We know changing magnetic field range can change the TGP outcome. Explain please @MSFTQuantum
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Thank you to everyone that came to my talk today and all the support over the last few weeks. Today was an important day for protecting the scientific record #apsmarch
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Microsoft Quantum just admitted several mistakes in their topological gap protocol. Most importantly, that their self-declared ‘main result’ in PRB 107, 245423—that they passed arXiv:2103.12217—is not true. I expect them to promptly inform @APSphysics.of their retraction.
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