论文标题
通过最佳弱测量结果在扩展方案中进行完整的网络非局部性共享
Full Network nonlocality sharing in extended scenario via Optimal Weak Measurements
论文作者
论文摘要
可以超过标准钟形定理框架的量子网络进一步研究量子非局部性的研究。最近，已经定义了比网络非局部性更强的全量子网络非局部性（FNN）的概念，可以被Kerstjens-Gisin-Tavakoli（kgt）不平等见证[Phys。莱特牧师。 128（2022）]。在这封信中，我们通过分析观察者不同组合之间的FNN共享来探讨FNN作为量子资源的回收利用。已经完全讨论了通过弱测量值在扩展的双腹场景中共享的FNN共享。根据观察者-Charlie1的不同动机，可以通过检查Alice-Bob-Charlie1和Alice-Bob-Bob-Bob-Bob-Bob-Bob-Charlie2之间的同时违反KGT不平等现象，可以通过检查两种类型的FNN共享，被动FNN共享和主动FNN共享。我们的结果表明，被动FNN共享是不可能的，而可以通过适当的测量来实现主动FNN共享，这表明FNN共享需要与贝尔非本地共享和网络非局部共享相比，中级观察者需要更多的合作。
Quantum networks, which can exceed the framework of standard bell theorem, flourish the investigation of quantum nonlocality further. Recently, a concept of full quantum network nonlocality (FNN) which is stronger than network nonlocality, has been defined and can be witnessed by Kerstjens-Gisin-Tavakoli (KGT) inequalities [Phys. Rev. Lett. 128 (2022)]. In this letter, we explored the recycling of FNN as quantum resources by analyzing the FNN sharing between different combinations of observers. The FNN sharing in extended bilocal scenario via weak measurements has been completely discussed. According to the different motivations of the observer-Charlie1, two types of possible FNN sharing, passive FNN sharing and active FNN sharing, can be investigated by checking the simultaneous violation of KGT inequalities between Alice-Bob-Charlie1 and Alice-Bob- Charlie2. Our results show that passive FNN sharing is impossible while active FNN sharing can be achieved by proper measurements, which indicate that FNN sharing requires more cooperation by the intermediate observers compared with Bell nonlocal sharing and network nonlocal sharing.
