Michael Newman

I'm often asked if I'll redo the 2019 quantum factoring estimate. Denser storage by yokes, smaller magic factories by cultivation, slimmer approx arithmetic by Chevignard et al… surely the cost is lower now?

Yes, it's lower now.

security.googleblog.com/2025/05/trac...

arxiv.org/abs/2505.15917

23.05.2025 13:25 — 👍 74    🔁 15    💬 2    📌 4

Mike finally paid for the "pro" version of sketchup, so we owned the 3d models attached to the paper, meaning the yoked surface codes paper is now published! www.nature.com/articles/s41...

The message of this paper is: anytime someone says they're 10x better than surface codes, actually it's 4x.

14.05.2025 22:14 — 👍 21    🔁 2    💬 0    📌 1

FAQ on Microsoft’s topological qubit thing Q1. Did you see Microsoft’s announcement?A. Yes, thanks, you can stop emailing to ask! Microsoft’s Chetan Nayak was even kind enough to give me a personal briefing a few weeks ago. Yest…

Actually, I think the claim is now that MZMs were shown in a 2023 PRB paper… see the discussion on Scott’s blog here rb.gy/u0hywx

Maybe not though? I’ll concede that I’m pretty confused.

22.02.2025 17:40 — 👍 0    🔁 0    💬 1    📌 0

My disappointment at noticing this response was grammatically accurate was immense.

21.02.2025 00:54 — 👍 3    🔁 0    💬 0    📌 0

To clarify, apparently the topological qubit evidence was provided to a group of invited scientists in a presentation on the 18th, and does not appear in the Nature paper.

20.02.2025 17:57 — 👍 0    🔁 0    💬 1    📌 0

Just to clarify, I think they presented the qubit evidence in an invited meeting on the 18th. It’s confusing, but I don’t think it’s the Nature paper that’s making the claim we’re seeing in headlines.

20.02.2025 17:44 — 👍 3    🔁 0    💬 1    📌 1

Welp, there goes my April Fools paper idea.

31.12.2024 13:33 — 👍 1    🔁 0    💬 1    📌 0

Two advances in quantum error correction share the Physics World 2024 Breakthrough of the Year – Physics World Complementary research brings practical quantum computing closer

Our work nature.com/articles/s41... on below-threshold error correction has won IOP Publishing's Physics World Breakthrough of the Year!

Shared with Bluvstein et al’s work on neutral atoms

Congrats to the field of quantum error correction! Excited for what's next

physicsworld.com/a/two-advanc...

19.12.2024 19:56 — 👍 3    🔁 0    💬 0    📌 0