A Group Quantum Communication Network Using Quantum Secret Sharing

2008 ◽  
Author(s):  
Hongyang Ma ◽  
Zhongwen Guo
Keyword(s):  
Communication Network ◽  
Secret Sharing ◽  
Quantum Communication ◽  
Quantum Secret Sharing

scholarly journals Continuous-Variable Quantum Secret Sharing Based on Thermal Terahertz Sources in Inter-Satellite Wireless Links

Entropy ◽  
2021 ◽  
Vol 23 (9) ◽  
pp. 1223
Author(s):  
Chengji Liu ◽  
Changhua Zhu ◽  
Zhihui Li ◽  
Min Nie ◽  
Hong Yang ◽  
...  
Keyword(s):  
Secret Sharing ◽  
Quantum Communication ◽  
Beam Splitter ◽  
Quantum Secret Sharing ◽  
Continuous Variable ◽  
Heterodyne Detection ◽  
Long Distance ◽  
Wireless Links ◽  
Satellite Links ◽  
Thz Sources

We propose a continuous-variable quantum secret sharing (CVQSS) scheme based on thermal terahertz (THz) sources in inter-satellite wireless links (THz-CVQSS). In this scheme, firstly, each player locally preforms Gaussian modulation to prepare a thermal THz state, and then couples it into a circulating spatiotemporal mode using a highly asymmetric beam splitter. At the end, the dealer measures the quadrature components of the received spatiotemporal mode through performing the heterodyne detection to share secure keys with all the players of a group. This design enables that the key can be recovered only by the whole group players’ knowledge in cooperation and neither a single player nor any subset of the players in the group can recover the key correctly. We analyze both the security and the performance of THz-CVQSS in inter-satellite links. Results show that a long-distance inter-satellite THz-CVQSS scheme with multiple players is feasible. This work will provide an effective way for building an inter-satellite quantum communication network.

An integrated space-to-ground quantum communication network over 4,600 kilometres

Nature ◽  
2021 ◽  
Author(s):  
Yu-Ao Chen ◽  
Qiang Zhang ◽  
Teng-Yun Chen ◽  
Wen-Qi Cai ◽  
Sheng-Kai Liao ◽  
...  
Keyword(s):  
Communication Network ◽  
Quantum Communication

scholarly journals Multiparty weighted threshold quantum secret sharing based on the Chinese remainder theorem to share quantum information

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yao-Hsin Chou ◽  
Guo-Jyun Zeng ◽  
Xing-Yu Chen ◽  
Shu-Yu Kuo
Keyword(s):  
Quantum Information ◽  
Phase Shift ◽  
Quantum State ◽  
Secret Sharing ◽  
Chinese Remainder Theorem ◽  
Security Analysis ◽  
Quantum Secret Sharing ◽  
Security Protocol ◽  
Multiple Quantum ◽  
Cryptographic Primitive

AbstractSecret sharing is a widely-used security protocol and cryptographic primitive in which all people cooperate to restore encrypted information. The characteristics of a quantum field guarantee the security of information; therefore, many researchers are interested in quantum cryptography and quantum secret sharing (QSS) is an important research topic. However, most traditional QSS methods are complex and difficult to implement. In addition, most traditional QSS schemes share classical information, not quantum information which makes them inefficient to transfer and share information. In a weighted threshold QSS method, each participant has each own weight, but assigning weights usually costs multiple quantum states. Quantum state consumption will therefore increase with the weight. It is inefficient and difficult, and therefore not able to successfully build a suitable agreement. The proposed method is the first attempt to build multiparty weighted threshold QSS method using single quantum particles combine with the Chinese remainder theorem (CRT) and phase shift operation. The proposed scheme allows each participant has its own weight and the dealer can encode a quantum state with the phase shift operation. The dividing and recovery characteristics of CRT offer a simple approach to distribute partial keys. The reversibility of phase shift operation can encode and decode the secret. The proposed weighted threshold QSS scheme presents the security analysis of external attacks and internal attacks. Furthermore, the efficiency analysis shows that our method is more efficient, flexible, and simpler to implement than traditional methods.

High-capacity three-party quantum secret sharing with superdense coding

2009 ◽  
Vol 18 (11) ◽  
pp. 4690-4694 ◽  
Author(s):  
Gu Bin ◽  
Li Chuan-Qi ◽  
Xu Fei ◽  
Chen Yu-Lin
Keyword(s):  
Secret Sharing ◽  
High Capacity ◽  
Quantum Secret Sharing ◽  
Superdense Coding

Quantum secret sharing

2002 ◽  
Author(s):  
Guo-Ping Guo ◽  
Guangcan Guo
Keyword(s):  
Secret Sharing ◽  
Quantum Secret Sharing

Local distinguishability of Dicke states in quantum secret sharing

2017 ◽  
Vol 381 (11) ◽  
pp. 998-1002 ◽  
Author(s):  
Jing-Tao Wang ◽  
Gang Xu ◽  
Xiu-Bo Chen ◽  
Xing-Ming Sun ◽  
Heng-Yue Jia
Keyword(s):  
Secret Sharing ◽  
Quantum Secret Sharing ◽  
Dicke States
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