论文标题
自我测试的非局部性而没有纠缠
Self-testing nonlocality without entanglement
论文作者
论文摘要
量子理论允许无纠缠的非局部性。值得注意的是，存在仅由产品本征态组成的两分量子测量值，但不能通过局部量子操作和经典通信来实施。在目前的工作中，我们表明，表现出没有纠缠的非局部性的测量值可以以独立的方式进行认证。具体而言，我们考虑一个简单的量子网络并构建一个自我测试过程。该结果还表明，仅使用非输入测量值可以获得真正的网络量子非局部性。从更一般的角度来看，我们的工作在没有纠缠的非局部性的效果与贝尔非局部性领域之间建立了联系。
Quantum theory allows for nonlocality without entanglement. Notably, there exist bipartite quantum measurements consisting of only product eigenstates, yet they cannot be implemented via local quantum operations and classical communication. In the present work, we show that a measurement exhibiting nonlocality without entanglement can be certified in a device-independent manner. Specifically, we consider a simple quantum network and construct a self-testing procedure. This result also demonstrates that genuine network quantum nonlocality can be obtained using only non-entangled measurements. From a more general perspective, our work establishes a connection between the effect of nonlocality without entanglement and the area of Bell nonlocality.
