论文标题
了解二阶量化的弗兰森型非局部相关性中的巧合检测
Understanding of coincidence detection in Franson-type nonlocal correlations for second-order quantum superposition
论文作者
论文摘要
巧合检测是在非本地量子相关测量中使用的关键技术，用于测试贝尔不平等的局部探测器之间的不平等现象。借助局部测量的个体均匀强度，非局部相关条纹是一个神秘的量子特征，无法经典地实现。在这里，一致研究了巧合检测，以通过选定的非局部测量事件之间的二阶量子叠加来了解非局部相关边缘的基本物理。由于配对光子的连贯性特征，重合技术会修改成对光子选定测量底座之间无法区分性的经验法则的测量事件。这种不可区分的性是由选定的巧合时插槽产生的非局部检测到的事件之间的量子叠加，在该巧合的时间段中，单独测量的光子之间的相干性是绝对条件。
Coincidence detection is a key technique used in nonlocal quantum-correlation measurements to test Bell inequality violation between remotely separated local detectors. With individual uniform intensity of local measurements, the nonlocal correlation fringe is a mysterious quantum feature that cannot be achieved classically. Here, the coincidence detection is coherently investigated to understand the fundamental physics of the nonlocal correlation fringe via second-order quantum superposition between selected nonlocal measurement events. Because of the coherence feature of paired photons, the coincidence technique modifies the measurement events for the rule of thumb of indistinguishability between selected measurement bases of paired photons. This indistinguishability is quantum superposition between nonlocally detected events resulting from a selected time slot of coincidence, where coherence between individually measured photons is an absolute condition.
