论文标题
识别真正的量子传送
Identifying genuine quantum teleportation
论文作者
论文摘要
量子传送是一种利用量子测量值和最大纠缠的爱因斯坦 - 波多尔斯基 - 罗森对（EPR）对来传递未知量子状态的方法。众所周知，所有纠缠状态都表现出所谓的“非经典隐性传送”，这些“非经典传送”无法通过开创性的经典测量策略来模拟。在本文中，我们提出了一个新的基准测试，该基准表明并非所有非经典隐性传送都是真正的量子力学。相反，存在一个更健壮的经典雌科模型，其中包括Measure-prepare模仿作为一种特殊情况，可以描述某些非经典传送。使这样的一般经典模型无效，表明了真正的量子传送，其中两对状态和测量都是真正的量子力学。我们证明，EPR转向赋予了真正的量子传送，而不是纠缠。新的基准可以轻松地用于实践实验中，以确保实施真正的量子传送。本文提供的结果提供了严格的标准，用于实施量子信息处理，而真正的量子传送是必不可少的。
Quantum teleportation is a method for utilizing quantum measurements and the maximally entangled Einstein-Podolsky-Rosen (EPR) pair to transmit an unknown quantum state. It is well known that all entangled states demonstrate so-called "nonclassical teleportation" that cannot be simulated by the seminal classical measure-prepare strategy. Herein, we propose a new benchmark which reveals that not all nonclassical teleportations are truly quantum-mechanical. Rather, there exists a more robust classical-teleportation model, which includes the measure-prepare mimicry as a special case, that can describe certain nonclassical teleportations. Invalidating such a general classical model indicates genuine quantum teleportation wherein both the pair state and the measurement are truly quantum-mechanical. We prove that EPR steering empowers genuine quantum teleportations, rather than entanglement. The new benchmark can be readily used in practical experiments for ensuring that genuine quantum teleportation is implemented. The results presented herein provide strict criteria for implementing quantum-information processing where genuine quantum teleportation is indispensable.
