期刊
QUANTUM INFORMATION PROCESSING
卷 20, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/s11128-021-03157-2
关键词
Quantum cryptography; Semi-quantum secret sharing; Bell states; Decoy photons; Specific bits
资金
- Fundamental Research Funds for the Central Universities [2019XDA02]
- National Natural Science Foundation of China [92046001, 61962009]
- Open Research Project of the State Key Laboratory of Media Convergence and Communication [KLMCC2020KF006]
An efficient semi-quantum secret sharing protocol based on Bell states is proposed in this study, which is more flexible and practical compared to existing protocols, and the qubit efficiency is increased significantly.
Quantum secret sharing (QSS) allows a trusted party to distribute the secret keys to a group of participates, who can only access the secret cooperatively. The semi-quantum secret sharing (SQSS) takes fewer quantum resources and has higher efficiency than the QSS protocol. However, in the existing SQSS protocols, the shared secrets are generated according to the random operations of Bob and Charlie, which are inefficient and uncertain. An efficient semi-quantum secret sharing protocol based on Bell states was proposed, where Alice can share the specific secrets with Bob and Charlie, by encoding her secrets on the two different Bell states. Then, the security analysis shows that this scheme is secure against intercept-resend attack, entangle-measure attack and Trojan horse attack. Compared with similar studies, the proposed scheme is more flexible and practical, and the qubit efficiency is increased by about 100%.
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