School of Science and State Key Laboratory of Information Photonics and Optical Communications;
Beijing University of Posts and Telecommunications;
Beijing 100876;
China;
China Telecom Research Institute;
Beijing 102209;
China;
China Academy of Electronics and Information Technology;
China Electronic Technology Group Corporation;
Beijing 100041;
China;
Twin-Field Quantum Key Distribution Protocol Based on Wavelength-Division-Multiplexing Technology; QKD; Quantum; Protocol; Key;