论文标题
远程空间可区分光子实现纠缠和传送的实验控制
Experimental control of remote spatial indistinguishability of photons to realize entanglement and teleportation
论文作者
论文摘要
尚未在实验上证明相同的子系统作为直接可控制的量子资源的远程空间不可区分性。我们设计了一个能够通过在两个遥远区域中独立调整其空间分布来调整两个光子空间区分的设置，从而导致从不相关的光子开始的极化纠缠。纠缠的量唯一取决于远程空间不可区分的程度，该度数通过熵度量$ \ Mathcal {i} $量化，该度量可以在经典阈值以上的忠诚度中传送。该实验通过相同的量子子系统的固有性质实现了一个基本的非本地纠缠门。
Remote spatial indistinguishability of identical subsystems as a direct controllable quantum resource at distant sites has not been yet experimentally proven. We design a setup capable to tune the spatial indistinguishability of two photons by independently adjusting their spatial distribution in two distant regions, which leads to polarization entanglement starting from uncorrelated photons. The amount of entanglement uniquely depends on the degree of remote spatial indistinguishability, quantified by an entropic measure $\mathcal{I}$, which enables teleportation with fidelities above the classical threshold. This experiment realizes a basic nonlocal entangling gate by the inherent nature of identical quantum subsystems.
