Quantum dialogue method for asymmetric capacity based on GHZ state and Bell state

Abstract

The invention discloses a quantum dialogue method for an asymmetric capacity based on a GHZ state and a Bell state. The quantum dialogue method for the asymmetric capacity based on the GHZ state and the Bell state uses the Bell state and the GHZ state to perform quantum communication simultaneously, so that a quantum communication process with the asymmetric capacity with three-bit secrete information in one party and two-bit secrete information in the other party in a round of quantum communication process can be realized. Besides, in a whole communication process, only first measured encoding information and second measured encoding information need to be published once through a classical channel, so that the possibility of information leakage in the communication process is reduced. Further, a first communication party and a second communication party in the communication process do not need to truly transfer first secrete information and second secrete information to the other party through quantum information, so that the confidentiality of the quantum dialogue method for the asymmetric capacity based on the GHZ state and the Bell state can be greatly improved.

Description

technical field [0001] The present application relates to the technical field of quantum communication, and more specifically, relates to a quantum dialogue method based on the asymmetric capacity of the GHZ state and the Bell state. Background technique [0002] Quantum communication has received more and more attention from experts and scholars because of its absolutely efficient security features that traditional communication methods do not have. As a branch of quantum communication, the Quantum Secure Direct Communication (QSDC) protocol was first proposed in 2002, which provides the possibility to realize the direct transmission of secret information between two participants through quantum signals. Quantum dialogue BQSDC appeared in 2004, making up for the shortcomings of the QSDC protocol that can only transmit in one direction, and realizing two-way quantum communication. [0003] With the continuous research of BQSDC by researchers, problems such as partial inform...

AI Technical Summary

Problems solved by technology

Nevertheless, the existing quantum dialogue protocols can only realize the secret information communication of symmetric capacity, that is, the secret information capacity of the two parties participating in the quantum dialogue must be symmetrical, and the quantum dialogue of asymmetric capacity cannot be realized, and in the actual communication process , the capacity of the secret information sent by the communication parties is generally asymmetric, therefore, the quantum dialogue protocol in the prior art is difficult to meet the requirements of actual communication

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