标题： 远程态制备中的非定域性与传输可视化的比较 显示英文标题

标题： Nonlocality in Remote State Preparation vis-a-vis Teleportation

摘要： 研究了迄今为止未被探索的远程状态准备（RSP）信息传递协议中量子关联的非定域性，并通过为隐形传态以及两种不同的RSP方案制定的统一非定域性论证进行了探讨。 该论证仅在每个场景中使用的局部测量类型上有所不同。 其中一种RSP方案使用单粒子投影测量，而另一种则使用联合贝尔基测量。 有趣的是，为每种RSP设置制定的贝尔-CHSH型不等式的量子力学违反值彼此相等，同时也等于使用相同非最大纠缠态资源的隐形传态对应的贝尔-CHSH型局域实在论不等式的违反值。 这表明，对于这种资源态，涉及信息传输的关联可提取的最大非定域性对于标准隐形传态协议和这里考虑的两种RSP方案来说是相同的，从而暗示隐形传态与远程状态准备之间的本质区别在于双方之间需要交换的经典信息量，而非底层关联的非定域性。 显示英文摘要

摘要： The hitherto unexplored nonlocality of quantum correlations in the information transfer protocol of remote state preparation (RSP) is investigated in terms of a unified nonlocality argument formulated for teleportation as well as for two distinct RSP schemes. The argument differs only in the respective types of local measurements used in each scenario. One of the RSP schemes uses single particle projective measurements, while the other uses joint Bell-basis measurements. Interestingly, the quantum mechanical violations of the Bell-CHSH type inequalities formulated for each of the RSP setups, while being equal to each other, also turn out to be equal to that of the corresponding Bell-CHSH type local realist inequality for teleportation, using the common resource of non-maximally entangled state. This reveals that for such a resource state, the maximum amount of extractable nonlocality of correlations involved in the transfer of information is the same for the standard teleportation protocol and the two RSP schemes considered here, thereby implying that the essential difference between teleportation and remote state preparation lies in the amount of classical information required to be exchanged between parties, and not in the nonlocality of underlying correlations.