多光子相长干涉解释光子的广义聚束效应

Generalized Photon Bunching Effect as a Result of Multi-Photon Constructive Interference

光的聚束效应的发现是量子光学的重要里程碑。对其进行合理解释的努力,促进了量子光学理论与技术的大发展,使量子光学迅速发展和完善起来。现在一般认为,光场二阶相干所体现的聚束效应的物理本质是双光子干涉。本文发现,在高阶相干中有类似的广义聚束效应,这种广义聚束效应也可以用光子相长干涉解释。而且在一些典型的光路中,N个光子参与的干涉,可以使这种广义聚束效应的增强因子达到N!。

The discovery, of photon bunching effect is an important milestone of quantum optics. The attempt to explain it leads to the development of the techniques in quantum optics. Nowadays, it＇s thought that the physics behind the photon bunching effect in the second-order coherence is two-photon interference. This paper shows that there are similar generalized bunching effects in higher-order coherence. We also claim that the generalized photon bunching effect is a result of multi-photon interference due to indistinguishability of photons. In some typical optical circuit, N- photon interference can let the enhancement factor be up to N!.