Henry Legg (@physicshenry) 's Twitter Profile
Henry Legg

@physicshenry

Lecturer (~asst prof) investigating quantum physics @univofstandrews. My opinions belong to 28 highly trained monkeys and are not those of my employer.

ID: 2270640056

linkhttps://legg.wp.st-andrews.ac.uk/ calendar_today31-12-2013 17:36:15

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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 American Physical Society of their retraction.

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 <a href="/APSphysics/">American Physical Society</a>
of their retraction.
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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

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 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: 💩💩💩💩💩

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 Azure Quantum

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 <a href="/MSFTQuantum/">Azure Quantum</a>
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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.

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.
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“The gap protocol is flawed,” said Henry Legg of the University of St Andrews. “The foundations to build a topological qubit aren’t there, and anyone claiming they have built one today is selling a dangerous fairy tale.” physics.aps.org/articles/v18/68

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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.

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The German press has been largely very good dealing with Azure Quantum’s nonsense. However, a little reminder: 😡Schottland ist nicht England!😡 🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿

The German press has been largely very good dealing with <a href="/MSFTQuantum/">Azure Quantum</a>’s nonsense. 

However, a little reminder:

😡Schottland ist nicht England!😡

🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿
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Microsoft's Majorana team are now cosplaying as "a small startup sitting inside a huge tech company" Just your typical shoestring outfit: 100+ people and $1 billion+ burnt As if we needed any more evidence that this team is now fully detached from reality...

Microsoft's Majorana team are now cosplaying as "a small startup sitting inside a huge tech company"  

Just your typical shoestring outfit: 100+ people and $1 billion+ burnt  

As if we needed any more evidence that this team is now fully detached from reality...