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

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%.

7 pages

References in corpus (9)

• Secure quantum key distribution network with Bell states and local unitary operations
• Three-party quantum secure direct communication based on Greenberger-Horne-Zeilinger states
• Revisiting the security of quantum dialogue and bidirectional quantum secure direct communication
• Quantum private comparison via cavity QED
• Large payload bidirectional quantum secure direct communication without information leakage
• Quantum secure dialogue with quantum encryption
• Information leakage resistant quantum dialogue with single photons in both polarization and spatial-mode degrees of freedom
• Secure direct bidirectional communication protocol using the Einstein-Podolsky-Rosen pair block
• A kind of quantum dialogue protocols without information leakage assisted by auxiliary quantum operation