Decentralized continuous-variable quantum secret sharing

被引：3

作者：

Peng, Runsheng ^{[1
]}

Guo, Ying ^{[1
,3
]}

Wang, Yijun ^{[1
]}

Liao, Qin ^{[2
]}

机构：

[1] Cent South Univ, Sch Informat Sci & Engn, Changsha 410083, Peoples R China

[2] Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Peoples R China

[3] Beijing Univ Posts & Telecommun, Sch Comp Sci, Beijing 100876, Peoples R China

来源：

QUANTUM INFORMATION PROCESSING | 2023年 / 22卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Quantum secret sharing; Decentralized; Continuous-variable; Discretely modulated; KEY DISTRIBUTION;

D O I：

10.1007/s11128-023-04126-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum secret sharing (QSS) is a method that allows multiple users to obtain pieces of a secret key from a dealer, but the complete key can only be recovered if all users collaborate. However, the status of the dealer in the system brings potential security risks to the communication network. To solve this problem, we propose a decentralized quantum secret sharing (DQSS) scheme that allows any honest user in the system to become a dealer and send a partial key to other users through an insecure quantum channel. The position of the dealer in the user chain in this scheme is no longer limited to the end of the chain, but can be located at any position. This scheme can be realized with local local oscillator (LLO) using discretely modulated coherent states (DMCSs). With this approach, the multi-user quantum secret sharing scheme can be implemented with any honest user acting as a dealer in a quantum communication network.

引用

页数：17

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