发表机构
University of Strasbourg; CNRS; CESQ; ISIS; Department of Physics, University of Wisconsin-Madison; QPerfect SAS; Institut Universitaire de France (IUF); Infleqtion（斯特拉斯堡大学; 法国国家科学研究中心; 量子化学中心; 结构与成像研究所; 威斯康星大学麦迪逊分校物理系; QPerfect公司; 法兰西学院; Infleqtion公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究基于静态原子总线的中性原子架构，通过辅助中介原子实现长程纠缠操作，设计最优控制协议，模拟显示相比原子穿梭架构逻辑错误率大幅改善，为可扩展容错中性原子量子计算提供实用替代方案。
AI 中文摘要
高效量子纠错和容错量子计算需要可扩展、高保真的长程连接。在中性原子量子计算机中，通常通过原子传输实现，但会引入延迟和运动加热。本文介绍基于静态原子总线的架构，辅助原子实现长程纠缠操作，支持高速低密度奇偶校验码的长程稳定器测量等，设计协议获高保真门，模拟显示逻辑错误率大幅改善。
英文摘要
Efficient quantum error correction and fault-tolerant quantum computing require scalable, high-fidelity long-range connectivity. In neutral-atom quantum computers, this is commonly achieved through atom transport, but shuttling introduces latency and motional heating that worsen with system size. Here, we introduce a neutral-atom architecture based on static atomic buses, in which auxiliary mediator atoms enable long-range entangling operations without qubit transport. The architecture naturally supports long-range stabilizer measurements in high-rate LDPC codes and transversal logical gates between neighboring surface-code patches, enabling a modular framework for efficient logical memories, Clifford computation, and magic-state distillation. To realize these capabilities, we co-design optimal-control protocols for bus-mediated controlled-Z gates that incorporate both microscopic neutral-atom dynamics and architectural constraints. We obtain smooth bus-mediated gates with fidelities approaching 99.9% and durations of a few hundred nanoseconds by combining time-optimal control with interaction-flatness and robustness constraints. Large-scale simulations of quantum error correction and logical entangling operations between neighboring surface-code patches predict more than an order-of-magnitude improvement in logical error rates compared with atom-shuttling architectures under realistic noise. The architecture achieves logical gate times of approximately 100 us and quantum-error-correction cycle times of about 1 ms for code distances d<12. These results establish static atomic buses as a practical alternative to atom shuttling for scalable fault-tolerant neutral-atom quantum computing.
Comments27 pages, 10 figures, v2 - revised
