Yotam Vaknin
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yotamvaknin.bsky.social
Yotam Vaknin
@yotamvaknin.bsky.social
Quantum Mechanic
They aren't using an exact simulator (since they use >100 qubits), but an MPS. If there was honest-to-god-quantum-advantage in there, one might expect something like this. That said, I remain very skeptical...
September 26, 2025 at 10:09 PM
You got me! (This is a joke, dual rail transmons are the future!)
September 10, 2025 at 10:13 AM
Both the Puri group from Yale and J. Claes from Logiqal published exciting results today with some overlapping ideas , so check their papers out as well:
arxiv.org/abs/2509.05212
arxiv.org/abs/2509.05232
September 8, 2025 at 10:11 AM
The bottom line is : magic states generation is now super cheap for architectures with long idling time and long range connectivity.

Read our updated paper here:
arxiv.org/abs/2502.01743
Efficient Magic State Cultivation on the Surface Code
Magic state cultivation is a newly proposed protocol that represents the state of the art in magic state generation. It uses the transversality of the $H_{XY}$ gate on the 2D triangular color-code, to...
arxiv.org
September 8, 2025 at 10:11 AM
This can reduce the number of atoms used for addition during factoring by almost half, reducing the number of active atoms by almost 8 Million!
September 8, 2025 at 10:11 AM
The most important point is that we can now get a 1E-7 fidelity magic state with over 75% success probability on Rydberg atoms with p=1E-3. This is high enough fidelity for factoring, and over 20x more efficient compared with resource estimates done THIS YEAR
September 8, 2025 at 10:11 AM
Starting with a small surface code makes the expansion to a larger surface code super cheap, which is why it becomes so much more efficient that the original Cultivation paper
September 8, 2025 at 10:11 AM
We used the fold transversal gates of on the surface code to measure a non-Clifford state and project the code into a useful magic state. This time we only need a single patch to make it work
September 8, 2025 at 10:11 AM