AI 中文总结
本文提出仅用单个类贝尔不等式，通过添加辅助局域源与节点的方法，克服拓扑障碍，实现任意构型量子网络中全量子网络非局域性的验证，为实验提供了友好途径。
AI 中文摘要
全量子网络非局域性（FQNN）描述网络中所有源均为非局域的场景。现有FQNN判据仅能通过违反单个类贝尔不等式在星形网络中验证。本文提出一种仅用单个类贝尔不等式在一般量子网络中认证FQNN的方法：通过在原始网络中添加精心选取数量的辅助局域源与节点，可克服单次检测的拓扑障碍；随后用单个不等式测试扩展网络的关联，若存在违反则意味着所有原始源必为非局域的。该方法为在任意网络拓扑中验证FQNN提供了高效、实验友好的途径。
英文摘要
Full quantum network nonlocality (FQNN) describes a scenario where all sources in a network are nonlocal. Existing criteria of FQNN can only be verified in star networks by violating a single Bell-like inequality. Here we propose a method that certifies FQNN in general quantum networks using only a single Bell-like inequality. We show that the topological obstacle to one-shot detection can be overcome by expanding the original network with a carefully chosen number of auxiliary local sources and parties. The correlations of the enlarged network are then tested with a single inequality; a violation implies that all original sources must be nonlocal. Our approach provides an efficient, experimentally friendly way to verify FQNN in any network topology.
