Single photon detector with high polarization sensitivity

被引：28
|
作者：
Guo, Qi [1 ]
Li, Hao [1 ]
You, LiXing [1 ]
Zhang, WeiJun [1 ]
Zhang, Lu [1 ]
Wang, Zhen [1 ]
Xie, XiaoMing [1 ]
Qi, Ming [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
来源：
SCIENTIFIC REPORTS | 2015年 / 5卷
基金：
中国国家自然科学基金;
关键词：
SYSTEM;
D O I：
10.1038/srep09616
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：
Polarization is one of the key parameters of light. Most optical detectors are intensity detectors that are insensitive to the polarization of light. A superconducting nanowire single photon detector (SNSPD) is naturally sensitive to polarization due to its nanowire structure. Previous studies focused on producing a polarization-insensitive SNSPD. In this study, by adjusting the width and pitch of the nanowire, we systematically investigate the preparation of an SNSPD with high polarization sensitivity. Subsequently, an SNSPD with a system detection efficiency of 12% and a polarization extinction ratio of 22 was successfully prepared.
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页数：5
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