An unknown quantum state can be teleported by using quantum measurements and the maximally entangled Einstein-Podolsky-Rosen (EPR) pair. It is well known that the usual nonclassical teleportation that cannot be simulated by the seminal classical measure-prepare strategy can be demonstrated with all entangled states. Herein, we propose a benchmark which reveals that not all such 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 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.

中文翻译：

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识别真正的量子隐形传态

可以通过使用量子测量和最大纠缠的爱因斯坦-波多尔斯基-罗森 (EPR) 对来传送未知的量子态。众所周知，经典的测量准备策略无法模拟的通常的非经典隐形传态可以用所有纠缠态来证明。在此，我们提出了一个基准，表明并非所有此类非经典隐形传态都是真正的量子力学。相反，存在一个更强大的经典隐形传态模型，其中包括作为特例的测量准备模仿，它可以描述某些非经典隐形传态。使这种一般经典模型无效表明真正的量子隐形传态其中配对状态和测量都是真正的量子力学。我们证明 EPR 转向能够实现真正的量子隐形传态，而不是纠缠。该基准可以很容易地用于实际实验，以确保实现真正的量子隐形传态。本文提出的结果为实现量子信息处理提供了严格的标准，其中真正的量子隐形传态是必不可少的。