Architecture for fast implementation of quantum low-density parity-check codes with optimized Rydberg gates

Poole, C., Graham, T. M., Perlin, M. A., Otten, M., et al. · 2025 · Physical Review A

| 编号 NA166 | 主题 实验架构与容错 | DOI 10.1103/physreva.111.022433 |

摘要

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2025 · Physical Review A We propose an implementation of bivariate bicycle codes (Nature {\bf 627}, 778 (2024)) based on long-range Rydberg gates between stationary neutral atom qubits. An optimized layout of data and ancilla qubits reduces the maximum Euclidean communication distance needed for non-local parity check operators. An optimized Rydberg gate pulse design enables $\mathsf{CZ}$ entangling operations with fidelity $\mathcal{F}>0.999$ at a distance greater than $12\mu \mathrm{m}$. The combination of optimized layout and gate design leads to a quantum error correction cycle time of $\sim 1.28\mathrm{ms}$ for a [[144,12,12]] code, nearly a factor of two improvement over previous designs.

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