| Two-Photon Interference Constructed by Two Hong–Ou–Mandel Effects in One Mach-Zehnder Interferometer |
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| 引用本文： | 刘瑞,孔令军,王周祥,司宇,齐文荣,黄双印,涂成厚,李勇男,王慧田.Two-Photon Interference Constructed by Two Hong–Ou–Mandel Effects in One Mach-Zehnder Interferometer[J].中国物理快报,2018(9). |
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| 作者姓名： | 刘瑞 孔令军 王周祥 司宇 齐文荣 黄双印 涂成厚 李勇男 王慧田 |
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| 摘 要： | We present a two-photon interference experiment in a modified Mach-Zehnder(MZ) interferometer in which two Hong–Ou–Mandel effects occur in tandem and construct superposed two-photon states. The signal photons pass both the arms of the MZ interferometer while the idler photons pass one arm only. Interestingly, the probability of the idler photons emerging from any output port still shows a sine oscillation with the two-photon phase difference and it can be characterized only by the indistinguishability of the two-photon amplitudes. We also observe a two-photon interference pattern with a period being equal to the wavelength of the parametric photons instead of the two-photon photonic de Broglie wavelength due to the presence of two-photon phase difference, in particular, with complementary probabilities of finding the two-photon pairs in two output ports. The abundant observations can facilitate a more comprehensive understanding of the two-photon interference.
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