Genuinely Multipartite Entangled Quantum States with Fully Local Hidden Variable Models and Hidden Multipartite Nonlocality.
Genuinely Multipartite Entangled Quantum States with Fully Local Hidden Variable Models and Hidden Multipartite Nonlocality.
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DOI：
10.1103/physrevlett.116.130401
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发表时间：
2015-11
影响因子：
8.6
通讯作者：
Joseph Bowles;J. Francfort;Mathieu Fillettaz;Flavien Hirsch;N. Brunner
中科院分区：
文献类型：
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作者：
Joseph Bowles;J. Francfort;Mathieu Fillettaz;Flavien Hirsch;N. Brunner
讨论了多部量子系统中纠缠与非定域性的关系。我们证明，对于任意数量的当事方，存在承认完全局部隐变量模型的真正多部纠缠态，即所有当事方都是分离的。因此，尽管这些状态表现出最强形式的多部纠缠，但考虑到一般的非顺序局部测量，它们不会导致贝尔不等式违反。然后，我们证明了这些状态的非局部性仍然可以使用局部测量序列激活，从而揭示了真正的多部隐藏非局部性。
The relation between entanglement and nonlocality is discussed in the case of multipartite quantum systems. We show that, for any number of parties, there exist genuinely multipartite entangled states that admit a fully local hidden variable model, i.e., where all parties are separated. Hence, although these states exhibit the strongest form of multipartite entanglement, they cannot lead to Bell inequality violation considering general nonsequential local measurements. Then, we show that the nonlocality of these states can nevertheless be activated using sequences of local measurements, thus revealing genuine multipartite hidden nonlocality.