Plug-and-play four-state modulation continuous-variable quantum key distribution

Author:

Zhou JianORCID,Li Hui,Feng YanyanORCID,Shi Ronghua,Shi JinjingORCID

Abstract

Abstract In this paper, a novel and highly efficient secure communication scheme is proposed through the integration of four-state modulation quantum key distribution and plug-and-play technology. This scheme serves the purpose of transmitting information reliably while preserving data confidentiality between two communicating parties. The most important advantage of the proposed continuous-variable QKD system is that the birefringence effect in fiber can be compensated automatically. Notably, simulation experimental evaluations are conducted, unveiling the performance of the plug-and-play four-state QKD which is as good as the four-state protocol when having small Rayleigh scattering noise. Furthermore, we conduct a comprehensive analysis of potential security threats targeted at the proposed protocol, thereby substantiating its robustness against such attacks. Moreover, theoretical justifications are provided to validate the security of the proposed scheme.

Funder

Department of Hunan

Research Fund of Central South University of Forestry

Special Foundation for Distinguished Young Scientists of Changsha

National Natural Science Foundation of China

Natural Science Foundation for Distinguished Young Scholars of Hunan Province

Publisher

IOP Publishing

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