可编程里德伯量子总线用于非局域连接
A Programmable Rydberg Quantum Bus for Nonlocal Connectivity
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中文总结 AI 辅助
本研究提出里德伯原子链作为可编程量子总线，通过色散区虚激发介导非局域相互作用，将一维架构转为准全连接网络，支持手性输运、远程纠缠等功能，且模拟验证其在实验条件下鲁棒，为可扩展量子网络提供硬件途径。
中文摘要 AI 辅助
可扩展量子网络需要具有灵活内部连接的处理节点，然而中性原子架构仍受限于原生里德伯相互作用的强空间依赖性。在此，我们展示里德伯原子链可作为相干量子总线，将局部连接的一维架构转换为有效的非局域相互作用网络。色散区域中的虚激发介导空间分离数据单元之间的可控相互作用，我们使用格林函数连分数方法解析推导了该相互作用。所得机制不限于单激发动力学，并支持多种不同功能，包括Floquet工程手性输运、机械振子的远程纠缠，以及用于选择性抑制不期望偶极交换的相消干涉。包含完整长程里德伯相互作用、原子位置涨落和有限里德伯态寿命的模拟表明，介导动力学在实验相关条件下保持鲁棒性。这些结果确立了里德伯链作为可编程相干介体，用于将中性原子量子节点的内部连接扩展至准全连接耦合，为可扩展和可重构量子网络架构提供了硬件级途径。
英文摘要
Scalable quantum networks require processing nodes with flexible internal connectivity, yet neutral-atom architectures remain constrained by the strong spatial dependence of native Rydberg interactions. Here we show that a Rydberg atom chain can act as a coherent quantum bus, converting a locally connected one-dimensional architecture into an effectively nonlocal interaction network. Virtual excitations in the dispersive regime mediate controllable interactions between spatially separated data units, which we derive analytically using a Green's-function continued-fraction method. The resulting mechanism is not restricted to single-excitation dynamics and supports several distinct functionalities, including Floquet-engineered chiral transport, remote entanglement of mechanical oscillators, and destructive interference for selectively suppressing unwanted dipole exchange. Simulations incorporating full long-range Rydberg interactions, atomic position fluctuations, and finite Rydberg-state lifetimes show that the mediated dynamics remain robust under experimentally relevant conditions. These results establish Rydberg chains as programmable coherent mediators for extending the internal connectivity of neutral-atom quantum nodes toward quasi-all-to-all coupling, providing a hardware-level route toward scalable and reconfigurable quantum-network architectures.
发表机构
- Northeast Normal University（东北师范大学）
- Zhejiang University（浙江大学）
- The University of Nottingham（诺丁汉大学）
- Yanbian University（延边大学）
机构由 AI 辅助整理，请以论文原文为准。
