论文标题
在双腹场景中的完整网络非局部性的实验证明
Experimental demonstration of full network nonlocality in the bilocal scenario
论文作者
论文摘要
网络中的节点之间的量子相关性由几个独立的纠缠来源和多部分纠缠系统组成，这对于对非局部性，量子信息处理和通信性质的性质的一般理解很重要。在过去的几年中，针对双腹场景的网络非局部性的演示一直处于重点。然而，已经发现，开创性协议未证明终点节点之间的纠缠，否则，网络中的所有来源都具有非本地性质。这促使发展更强大的概念，称为完整的网络非局部性。在这里，我们在实验中证明了网络中的完整网络非局部相关性。具体而言，我们使用了两对极化纠缠量子，由两个独立且独立的纠缠源和一个部分钟形状态测量产生。我们的结果可能为在量子通信协议中使用非局部通信协议中的非局部性测试铺平了道路。
Quantum correlation between nodes in a network which consist of several independent sources of entanglement and in multipartite entanglement systems are important for general understanding of the nature of nonlocality, quantum information processing and communication. In previous years, demonstrations of network nonlocality for bilocal scenarios have been in the focus. Yet, it has been found that the seminal protocols do not certify entanglement between end nodes, which otherwise require all sources in the network to be of nonlocal nature. This has motivated for development of even stronger concept, called full network nonlocality. Here, we experimentally demonstrate full network nonlocal correlations in a network. Specifically, we use two pairs of polarization entangled qubits created by two separate and independent entanglement sources and a partial Bell state measurement. Our results may pave the way for the use of nonlocality test in quantum communication protocols with a full network nonlocality certification.
