Affiliation:
1. Broadband Wireless Communication and Sensor Network Technology, Key Lab of Ministry of Education
2. Telecommunication and Networks, National Engineering Research Center
Abstract
Mode-pairing quantum key distribution (MP-QKD) holds great promise for the practical implementation of QKD in the near future. It combines the security advantages of measurement device independence while still being capable of breaking the Pirandola–Laurenza–Ottaviani–Banchi bound without the need for highly demanding phase-locking and phase-tracking technologies for deployment. In this work, we explore optimization strategies for MP-QKD in a wavelength-division multiplexing scenario. The simulation results reveal that incorporation of multiple wavelengths not only leads to a direct increase in key rate but also enhances the pairing efficiency by employing our novel pairing strategies among different wavelengths. As a result, our work provides a new avenue for the future application and development of MP-QKD.
Funder
National Natural Science Foundation of China
Jiangsu Provincial Key Research and Development Program
Natural Science Foundation of Jiangsu Province
Major Basic Research Project of the Natural Science Foundation of the Jiangsu Higher Education Institutions