Abstract At present, most quantum secret sharing (QSS) protocols are more or less designed with the incorporation of classical secret sharing schemes. With the increasing maturity of quantum technology, QSS protocols based on pure quantum mechanics are becoming more important. Classical secret sharing schemes cannot achieve absolute security, and their involvement can compromise the security of QSS protocols. This paper proposes a QSS scheme based on Greenberger-Horn-Zeilinger (GHZ) basis measurement and quantum entanglement exchange. In this protocol, the secret sender stores the secret information using Pauli operations. Participants obtain their shares by measuring the product state sequentially. Finally, participants complete the secret reconstruction through quantum entanglement exchange and other related quantum operations. In addition, the particles held by participants in the protocol do not contain any secret information. Each participant's particles are in a state of maximum entanglement, and no participant can deduce the particle information of other participants through their own particles. At the same time, the protocol is based on pure quantum mechanics and does not involve classical schemes, which avoids the problem of reduced security of the protocol. Security analysis indicates that the protocol is not vulnerable to retransmission interception and collusion attacks. Moreover, it is capable of detecting and terminating the protocol promptly when facing with attacks from dishonest participants.
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 62002105) and the Key Research and Development Program of Hubei, China (Grant No. 2021BEA163).
Corresponding Authors:
Bai Liu
E-mail: liubai@hbut.edu.cn
Cite this article:
Bai Liu(刘白), Jun Zhang(张俊), Shupin Qiu(邱书品), and Mingwu Zhang(张明武) A pure quantum secret sharing scheme based on GHZ basis measurement and quantum entanglement exchange 2025 Chin. Phys. B 34 030304
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