Theoretically extensible quantum digital signature with starlike cluster states

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• 作者：Yu-Guang Yang ; Zhi-Chao Liu ; Jian Li ; Xiu-Bo Chen…
• 关键词：Quantum digital signature ; Cluster states ; Quantum key distribution ; Repudiation ; Forgery
• 刊名：Quantum Information Processing
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：16
• 期：1
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics;
• 出版者：Springer US
• ISSN：1573-1332
• 卷排序：16

文摘

Chen et al. (Phys Rev A 73:012303, 2006) constructed this “starlike cluster” state, which involves one qubit located at the center and n neighboring two-qubit arms. This genuine entangled state has been used for the construction of 2D and 3D cluster states, topological one-way computation, and dynamical quantum secret sharing. In this paper, we investigate the usefulness of this starlike cluster state and propose a theoretically extensible quantum digital signature scheme. The proposed scheme can be theoretically generalized to more than three participants. Moreover, it retains the merits of no requirements such as authenticated quantum channels and long-term quantum memory. We also give a security proof for the proposed scheme against repudiation and forgery.