标题：Quantum key agreement with Bell states and Cluster states under collective noise channels
作者：Wang, Sha-Sha; Jiang, Dong-Huan; Xu, Guang-Bao; Zhang, Yong-Hua; Liang, Xiang-Qian
作者机构：[Wang, Sha-Sha; Jiang, Dong-Huan; Xu, Guang-Bao; Liang, Xiang-Qian] Shandong Univ Sci & Technol, Coll Math & Syst Sci, Qingdao 266590, Shandong, Peopl 更多
通讯作者：Liang, XQ;Liang, XiangQian
通讯作者地址：[Liang, XQ]Shandong Univ Sci & Technol, Coll Math & Syst Sci, Qingdao 266590, Shandong, Peoples R China.
来源：QUANTUM INFORMATION PROCESSING
关键词：Quantum key agreement; Collective noise; Bell states; Cluster states
摘要：The collective noises, which include the collective-dephasing noise and the collective-rotation noise, are the topical noises in quantum key agreement (QKA). How to eliminate the influence of the collective noises on quantum communication is a problem to be solved urgently. In this paper, based on logical quantum states, by using controlled-Z, controlled-NOT and unitary operations, two QKA protocols which can be immune to the collective-dephasing noise and the collective-rotation noise are proposed, respectively. The security analysis indicates that these two protocols can resist participant attack and outsider attacks which include Trojan-horse attacks, intercept-resend attack, measure-resend attack and entangle-measure attack. By comparing with the proposed two-party QKA protocols against the collective noises, it is clear that our protocols are more efficient.