Dominant Noise Source in DWDM Scheme of 1550 nm Continuous-variable Quantum Key Distribution

Yijia Zhao1, Yichen Zhang1, Song Yu1,∗, Hong Guo2 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China 2State Key Laboratory of Advanced Optical Communication Systems and Networks, Center for Computational Science and Engineering and Center for Quantum Information Technology, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China e-mail: yusong@bupt.edu.cn