Research on the Hong-Ou-Mandel interference with two independent sources

被引：9
|
作者：
Wang, Si [1 ,2 ,3 ]
Liu, Chen-Xi [1 ,2 ,3 ]
Li, Jian [1 ,2 ,3 ]
Wang, Qin [1 ,2 ,3 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Inst Quantum Informat & Technol, Nanjing 210003, Jiangsu, Peoples R China
[2] NUPT, Minist Educ, Broadband Wireless Commun & Senser Network Techno, Key Lab, Nanjing 210003, Jiangsu, Peoples R China
[3] NUPT, Natl Engn Res Ctr, Telecommun & Networks, Nanjing 210003, Jiangsu, Peoples R China
来源：
SCIENTIFIC REPORTS | 2019年 / 9卷 / 1期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
D O I：
10.1038/s41598-019-40720-5
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In this paper, we carry out investigation on the HOM interference between two independent photons by using interference filters with different bandwidth both in theory and experiment. Our experimental results are consistent with the theoretical predictions. From the experimental and theoretical results, we find that interference filters with a narrower bandwidth can help to give a larger coherence length, due to the broadening of photon wave-packet in the spatial domain, resulting in an higher interference visibility. Furthermore, a combination of interference filters with different bandwidths may help to achieve a nice balance between coincidence counting rate and interference visibility. Our present work might provide valuable reference for further implementation of HOM interference in the field of quantum information.
引用
收藏
页数：7
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