论文标题
通过量子纠缠检测三方转向
Detecting Tripartite Steering via Quantum Entanglement
论文作者
论文摘要
Einstein-Podolsky-Rosen转向是量子信息处理中的一种强大的非内置量子资源，例如量子加密和量子通信。在过去的几年中，已经提出了许多标准，用于在分析和数值上检测到双分部分量子系统的可固定性。我们通过建立三方可统一性（分别是真正的三方可接收性）与某些相应量子状态的三方（分别纠缠）（分别的三方纠缠）（分别的三方纠缠（分别）纠缠（分别的三方纠缠），提出了三Q量量子状态的三方可固定性和真正的三分位量子状态的有效标准。从这些连接中，可以检测到三方的可统一性和真正的三方可识别性，而无需使用任何转向不平等。可以通过检测实验中新建状态的纠缠来降低确定三方转向和真正的三方转向的``复杂成本''。给出了详细的示例，以说明我们标准在检测三方状态的（真正的）三方可固定性方面的力量。
Einstein-Podolsky-Rosen steering is a kind of powerful nonlocal quantum resource in quantum information processing such as quantum cryptography and quantum communication. Many criteria have been proposed in the past few years to detect steerability, both analytically and numerically, for bipartite quantum systems. We propose effective criteria for tripartite steerability and genuine tripartite steerability of three-qubit quantum states by establishing connections between the tripartite steerability (resp. genuine tripartite steerability) and the tripartite entanglement (resp. genuine tripartite entanglement) of certain corresponding quantum states. From these connections, tripartite steerability and genuine tripartite steerability can be detected without using any steering inequalities. The ``complex cost'' of determining tripartite steering and genuine tripartite steering can be reduced by detecting the entanglement of the newly constructed states in the experiment. Detailed examples are given to illustrate the power of our criteria in detecting the (genuine) tripartite steerability of tripartite states.
