Quantum dialogue based on quantum encryption with single photons in both polarization and spatial-mode degrees of freedom

• URL: http://arxiv.org/abs/2205.08317v1
• Date: Sat, 14 May 2022 23:52:15 GMT
• Title: Quantum dialogue based on quantum encryption with single photons in both polarization and spatial-mode degrees of freedom
• Authors: Tian-Yu Ye, Mao-Jie Geng, Tian-Jie Xu, Ying Chen
• Abstract summary: A novel information leakage resistant quantum dialogue (QD) protocol with single photons in both polarization and spatial-mode degrees of freedom is proposed. The information-theoretical efficiency of the proposed QD protocol is as high as 40%.
• Score: 3.312385039704987
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, a novel information leakage resistant quantum dialogue (QD) protocol with single photons in both polarization and spatial-mode degrees of freedom is proposed, which utilizes quantum encryption technology to overcome the information leakage problem. In the proposed QD protocol, during the transmission process, the single photons in both polarization and spatial-mode degrees of freedom used for encoding two communicants' private classical bits are protected by both quantum encryption technology and decoy photon technology. For avoiding the information leakage problem, the initial states of the single photons in both polarization and spatial-mode degrees of freedom used for encoding two communicants' private classical bits are shared between two communicants through quantum key encryption and decryption. The information-theoretical efficiency of the proposed QD protocol is as high as 40%.

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