Quantum interference inside a nonlinear crystal with spontaneous parametric down-conversion

被引：0
|
作者：
Wu, Shuang [1 ]
Zhang, De-Jian [2 ]
Yang, Huan [1 ]
Wang, Hai-Bo [1 ]
Xiong, Jun [1 ]
Wang, Kaige [1 ]
机构：
[1] Beijing Normal Univ, Dept Phys, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China
[2] Nanchang Univ, Dept Phys, Nanchang 330031, Jiangxi, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2020年 / 463卷
基金：
中国国家自然科学基金;
关键词：
Quantum interference; Non-collinear spontaneous parametric down-conversion; Two-color photon pairs; Two-photon coincidence measurement; PHOTONS;
D O I：
10.1016/j.optcom.2020.125379
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the experimental observation of two-photon interference which takes place inside a type-I nonlinear crystal with spontaneous parametric down-conversion. The interference originates from the non-collinear configuration of two down-converted photons for both frequency degenerate and non-degenerate cases. The symmetry of the two-photon frequency spectrum and spatial spectrum dominates the interference visibility. The present work could provide more experimental evidence of quantum properties, which is originally formed inside a two-photon entangled source.
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页数：5
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