Abstract
Quantum key distribution (QKD) is an effective solution to ensure the secure transmission of information. However, for the large-scale application of QKD, the interoperability and flexibility of the transmitter and receiver are urgent issues to be solved. Here, for the first time, to the best of our knowledge, we experimentally verify the feasibility of one continuous-variable (CV) QKD system to achieve multiple protocols and rates. The flexibility of the system comes from the modulator realizing multiple protocols and a broadband coherent detector realizing multiple symbol rates. The results show that this system can switch between different rates and protocols to generate the secure key, and reveal its similarity to classical optical communication. Therefore, It can be adjusted according to user needs and provides a system-level solution for building a flexible quantum network.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Yaodi Pi, Heng Wang, Yan Pan, Yun Shao, Yang Li, Jie Yang, Yichen Zhang, Wei Huang, and Bingjie Xu
Opt. Lett. 48(7) 1766-1769 (2023)
Heng Wang, Yan Pan, Yun Shao, Yaodi Pi, Ting Ye, Yang Li, Tao Zhang, Jinlu Liu, Jie Yang, Li Ma, Wei Huang, and Bingjie Xu
Opt. Express 31(4) 5577-5592 (2023)
Yan Pan, Heng Wang, Yun Shao, Yaodi Pi, Yang Li, Bin Liu, Wei Huang, and Bingjie Xu
Opt. Lett. 47(13) 3307-3310 (2022)