Polarization-insensitive quantum key distribution using planar lightwave circuit chips

被引：0
|
作者：
Guo-Wei ZHANG [1 ,2 ]
Wei CHEN [1 ,2 ]
Guan-Jie FAN-YUAN [1 ,2 ]
Li ZHANG [1 ,2 ,3 ]
Fang-Xiang WANG [1 ,2 ]
Shuang WANG [1 ,2 ]
Zhen-Qiang YIN [1 ,2 ]
De-Yong HE [1 ,2 ]
Wen LIU [4 ]
Jun-Ming AN [5 ,6 ]
Guang-Can GUO [1 ,2 ]
Zheng-Fu HAN [1 ,2 ]
机构：
[1] CAS Key Laboratory of Quantum Information, University of Science and Technology of China
[2] CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China
[3] Hefei Quantachip Technology Co.,Ltd.
[4] USTC Center for Micro-and Nanoscale Research and Fabrication, University of Science and Technology of China
[5] State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences
[6] Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences
来源：
Science China(Information Sciences) | 2022年 / 65卷 / 10期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
O413 [量子论]; TN918.4 [密码的加密与解密];
学科分类号：
070201 ; 0839 ; 1402 ;
摘要：
Self-stabilizing the quantum key distribution(QKD) system is essential to evaluate eavesdroppers’ information accurately. We develop and verify a polarization-insensitive time-bin decoder chip for QKD with the hybrid asymmetric Faraday-Michelson interferometer(AFMI) based on the planar lightwave circuit(PLC). Compared with existing chip-based QKD works, the scheme can intrinsically compensate for the polarization perturbation to quantum signals and thus work at arbitrary temperatures. We experimentally verify the chips in a time-bin QKD system at the clocking rate of 1.25 GHz and obtain an average secure key rate(SKR) of 1.34 Mbps over a 50 km fiber channel with an optimized analysis model. The steady variations of the quantum bit error and SKR with random polarization disturbance demonstrate that PLC-based AFMIs are available for developing self-stable QKD systems.
引用
收藏
页码：66 / 72
页数：7
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