Liu Jianbin, Zheng Huaibin, Chen Hui, Zhou Yu, Li Fu-li, Xu Zhuo
Opt Express. 2015 May 4;23(9):11868-78. doi: 10.1364/OE.23.011868.
The first- and second-order temporal interference between two independent thermal and laser light beams is discussed by employing the superposition principle in Feynman's path integral theory. It is concluded that the first-order temporal interference pattern can not be observed by superposing two independent thermal and laser light beams, while the second-order temporal interference pattern can be observed in the same condition. These predictions are experimentally verified by employing pseudothermal light to simulate thermal light. The relationship between the indistinguishability of alternatives and photons is analyzed. The conclusions are helpful to understand the interference of different kinds of light and the difference between the coherence properties of thermal and laser light.
利用费曼路径积分理论中的叠加原理，讨论了两束独立的热光和激光束之间的一阶和二阶时间干涉。得出结论：叠加两束独立的热光和激光束无法观察到一阶时间干涉图样，而在相同条件下可以观察到二阶时间干涉图样。通过使用赝热光模拟热光，对这些预测进行了实验验证。分析了替代方案的不可区分性与光子之间的关系。这些结论有助于理解不同种类光的干涉以及热光和激光相干特性之间的差异。
