Peiris M, Konthasinghe K, Muller A
Physics Department, University of South Florida, Tampa, Florida 33620, USA.
Phys Rev Lett. 2017 Jan 20;118(3):030501. doi: 10.1103/PhysRevLett.118.030501. Epub 2017 Jan 19.
We report a Franson interferometry experiment based on correlated photon pairs generated via frequency-filtered scattered light from a near-resonantly driven two-level semiconductor quantum dot. In contrast to spontaneous parametric down-conversion and four-wave mixing, this approach can produce single pairs of correlated photons. We have measured a Franson visibility as high as 66%, which goes beyond the classical limit of 50% and approaches the limit of violation of Bell's inequalities (70.7%).
我们报告了一项基于弗兰森干涉测量法的实验，该实验利用了通过对近共振驱动的二能级半导体量子点的散射光进行频率滤波而产生的关联光子对。与自发参量下转换和四波混频不同，这种方法可以产生单对关联光子。我们测量到的弗兰森可见度高达66%，超过了50%的经典极限，接近违反贝尔不等式的极限（70.7%）。
