Spatial interference effect of two-photon in femtosecond-pulse pumped spontaneous parametric down-conversion

被引：0
|
作者：
Lu, SL [1 ]
Sun, BQ [1 ]
Liu, B [1 ]
Jiang, DS [1 ]
Xu, ZY [1 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2002年 / 19卷 / 03期
关键词：
D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have used the transverse correlated properties of the entangled photon pairs generated in the process of spontaneous parametric down-conversion, which is pumped by a femtosecond pulse laser, to perform Young's interference experiment. Unlike the case of a continuous wave laser pump, a broadband pulse laser pump can submerge an interference pattern. In order to obtain a high visibility interference pattern, we used a lens with a tunable focal length and two interference filters to eliminate the effects of the broadband pump laser. It is proven that the process of two-photon direct interference is a post-selection process.
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页码：345 / 347
页数：3
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