标题:Compact all-fiber polarization-independent up-conversion single-photon detector
作者:Liang, Long-Yue; Liang, Jun-Sheng; Yao, Quan; Zheng, Ming-Yang; Xie, Xiu-Ping; Liu, Hong; Zhang, Qiang; Pan, Jian-Wei
作者机构:[Liang, Long-Yue; Yao, Quan; Zheng, Ming-Yang; Xie, Xiu-Ping; Zhang, Qiang] Jinan Inst Quantum Technol, Jinan 250101, Shandong, Peoples R China.; [L 更多
通讯作者:Zhang, Qiang;Zhang, Q;Zhang, Q
通讯作者地址:[Zhang, Q]Univ Sci & Technol China, Natl Lab Phys Sci, Microscale, Hefei 230026, Anhui, Peoples R China;[Zhang, Q]Univ Sci & Technol China, Dept Moder 更多
来源:OPTICS COMMUNICATIONS
出版年:2019
卷:441
页码:185-189
DOI:10.1016/j.optcom.2019.02.057
关键词:Polarization-independent; Single-photon detector; Up-conversion;; Periodically poled lithium niobate waveguide
摘要:We demonstrate a compact all-fiber polarization-independent up-conversion single-photon detector based on integrated reverse proton exchanged periodically poled lithium niobate waveguides. The horizontally and vertically polarized components of randomly polarized signals are separated with a fiber-coupled polarization beam splitter, launched into two orthogonally polarized polarization maintaining fibers and fetched into two adjacent independent waveguides on the same device. The up-converted outputs from both waveguide channels are then combined with a multi-mode fiber combiner and detected by a silicon detector. With this configuration, the polarization-independent single-photon counting at 1.55 mu m is achieved with a system detection efficiency of 29.3%, a dark count rate of 1600 counts per second, and a polarization dependent loss of 0.1dB. This compact all-fiber system is robust and has great application potential in practical quantum key distribution systems.
收录类别:EI;SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062413577&doi=10.1016%2fj.optcom.2019.02.057&partnerID=40&md5=477da0bedb68915ce13e90cfb7e4968c
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