Unified view of the second-order and the fourth-order interferences in a single interferometer
Unified view of the second-order and the fourth-order interferences in a single interferometer
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DOI：
10.1016/j.optcom.2014.09.037
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发表时间：
2015-02
影响因子：
2.4
通讯作者：
J. Qiu;Yong-Sheng Zhang;G. Xiang;Shensheng Han;Youzhen Gui
中科院分区：
文献类型：
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作者：
J. Qiu;Yong-Sheng Zhang;G. Xiang;Shensheng Han;Youzhen Gui
双光子干涉在量子光学和量子力学的其他相干现象中有着重要的意义。在这里，我们表明，两种干扰，第二和第四阶干涉，可以出现在不同的区域中的单独或组合的形式，通过连续调谐在一个单一的干涉仪的时间延迟。特别地，在组合形式中，我们可以观察到包络中的四阶干涉和条纹中的二阶干涉。同时也证明了在这种干涉仪中，两个光子的行为与时间-能量纠缠光子的行为不同。这个例子清楚地说明了双光子现象不同于双光子现象。
Two-photon interferences are very important in quantum optics and other coherence phenomena of quantum mechanics. Here we show that two kinds of interferences, the second- and the fourth-order interferences, can arise in either separate or combined forms in different regions by tuning the time delay in a single interferometer continuously. Particularly, in the combined form we can observe the fourth-order interference in the envelope and the second-order in the fringe. It is also demonstrated that two individual photons behave differently from time–energy entangled photons in this interferometer. This example elucidates clearly that bi-photon phenomena are different from the phenomena with two photons.