Comments on: Google Claims Quantum Error Correction Milestone With “Willow” Chip https://www.nextplatform.com/2024/12/09/google-claims-quantum-error-correction-milestone-with-willow-chip/ In-depth coverage of high-end computing at large enterprises, supercomputing centers, hyperscale data centers, and public clouds. Wed, 18 Dec 2024 18:53:28 +0000 hourly 1 https://wordpress.org/?v=6.7.1 By: Slim Albert https://www.nextplatform.com/2024/12/09/google-claims-quantum-error-correction-milestone-with-willow-chip/#comment-242203 Fri, 13 Dec 2024 14:35:16 +0000 https://www.nextplatform.com/?p=145107#comment-242203 In reply to Hubert.

Reminds me of a Tess Skyrme article from last April ( https://www.eetimes.eu/quantum-computing-the-logical-next-steps/ ) where the required ratios of physical to logical qubits (that vary among modalities) were listed as 2:1 for photonics, 10:1 for neutral atoms and trapped ions, and more than 1,000:1 for the superconducting case. The 1457:1 ratio seems to match that perspective (if superconducting).

]]> By: Hubert https://www.nextplatform.com/2024/12/09/google-claims-quantum-error-correction-milestone-with-willow-chip/#comment-242040 Wed, 11 Dec 2024 12:32:28 +0000 https://www.nextplatform.com/?p=145107#comment-242040 Quite interesting! It seems there is an open access version of the Nature paper “Quantum error correction below the surface code threshold” ( https://www.nature.com/articles/s41586-024-08449-y ) available at: https://arxiv.org/abs/2408.13687 — it gives the research background behind what went into Sycamore and Willow if I understood well.

In the “Outlook” section of that paper, they note that a 10⁻⁶ error rate may result from 1457 physical qubits (distance-27 logical qubit). Might that suggest the start of a well-behaved “continuum scale” of quantum phenomena?

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