davidbyfield.bsky.social
David Byfield
@davidbyfield.bsky.social
180 followers 130 following 4 posts
PhD Student @ University of Edinburgh, part-time QEC & Software @ Riverlane. Views my own etc
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davidbyfield.bsky.social
David Byfield @davidbyfield.bsky.social · Jul 28
In quantum bluesky fashion, here's a summary meme! @dulwichquantum.bsky.social

Thanks to my wonderful collaborators, Gyorgy Geher and Archibald Ruban @riverlane.com for the great project 3/3
Spongebob destroys the folklore of qLDPC codes needing beyond square-grid hardware
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davidbyfield.bsky.social
David Byfield @davidbyfield.bsky.social · Jul 28
We encode 4,6 and even 12 logical qubits using just 25-66% the physical qubit count of the RPC, all while having better logical performance.

We think these codes open exciting new directions for QEC code design and we hope they inspire even more new ideas 🧠
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davidbyfield.bsky.social
David Byfield @davidbyfield.bsky.social · Jul 28
New paper! ✨ scirate.com/arxiv/2507.1... ✨

We present a new family of qLDPC codes that beat the rotated planar code while only requiring square-grid (or even hex-grid!) connectivity. 1/3
scirate.com
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davidbyfield.bsky.social
David Byfield @davidbyfield.bsky.social · May 30
Got AMO qubits and love doing transversal gates, but don't know how to decode them efficiently and quickly? Check out this awesome new paper from my very talented colleagues @riverlane.com ! 🧪
riverlane.com
Riverlane @riverlane.com · May 30
👻 We ain’t afraid of no ghost!

A new #arXiv paper from our team proposes the 'ghost protocol’ to enable AMO qubits to catch up with superconducting qubits, which lag in #QEC cycle speeds.

It addresses the challenges of scalable #QuantumErrorCorrection in the context of fast transversal logic👇🧪
arxiv-quant-ph.bsky.social
arxiv quant-ph @arxiv-quant-ph.bsky.social · May 30
Mark L. Turner, Earl T. Campbell, Ophelia Crawford, Neil I. Gillespie, Joan Camps
Scalable decoding protocols for fast transversal logic in the surface code
https://arxiv.org/abs/2505.23567
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Reposted by David Byfield
universal-soup.bsky.social
Campbell McLauchlan @universal-soup.bsky.social · Dec 10
Okay obligatory paper meme: Recently Setiawan, at Riverlane, and I released a preprint on how to tailor Floquet codes to noise that is biased towards, say, Z errors. This "X3Z3 Floquet code" could improve performance on architectures using, e.g. the heavy-hex lattice.
www.arxiv.org/abs/2411.04974
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