Ham Byoung S
Center for Photon Information Processing, School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Chumdangwagi-ro, Buk-gu, Gwangju, 61005, South Korea.
Sci Rep. 2021 May 27;11(1):11188. doi: 10.1038/s41598-021-90668-8.
Over the last several decades, entangled photon pairs generated by spontaneous parametric down conversion processes in both second-order and third-order nonlinear optical materials have been intensively studied for various quantum features such as Bell inequality violation and anticorrelation. In an interferometric scheme, anticorrelation results from photon bunching based on randomness when entangled photon pairs coincidently impinge on a beam splitter. Compared with post-measurement-based probabilistic confirmation, a coherence version has been recently proposed using the wave nature of photons. Here, the origin of quantum features in a coupled interferometric scheme is investigated using pure coherence optics. In addition, a deterministic method of entangled photon-pair generation is proposed for on-demand coherence control of quantum processing.
在过去几十年中，二阶和三阶非线性光学材料中通过自发参量下转换过程产生的纠缠光子对，因其各种量子特性，如违反贝尔不等式和反关联，而受到深入研究。在干涉测量方案中，当纠缠光子对同时撞击分束器时，反关联源于基于随机性的光子聚束。与基于测量后概率性确认相比，最近有人利用光子的波动性提出了一种相干版本。在此，使用纯相干光学研究了耦合干涉测量方案中量子特性的起源。此外，还提出了一种纠缠光子对产生的确定性方法，用于量子处理的按需相干控制。
