Decoherence Effects on Multiplayer Cooperative Quantum Games

• 来源期刊: 理论物理通讯：英文版
• 学科: 工学
• 关键词: 量子通道 游戏 相干效应 合作 强阻尼 消相干 初始状态 去极化
• 年，卷（期）: 2011,（8）
• 页码范围: 228-234
• 页数: 7页
• 分类号: O413|TS952.83
• 语种: 英文

摘要

We study the behavior of cooperative multiplayer quantum games [Q. Chen, Y. Wang, J.T. Liu, and K.L. Wang, Phys. Lett. A 327 （2004） 98; A.P. Flitney and L.C.L. Hollenberg, Quantum Inf. Comput. 7 （2007） 111] in the presence of decoherence using different quantum channels such as amplitude damping, depolarizing and phase damping. It is seen that the outcomes of the games for the two damping channels with maximum values of decoherence reduce to same value. However, in comparison to phase damping channel, the payoffs of cooperators are strongly damped under the influence amplitude damping channel for the lower values of decoherence parameter. In the case of depolarizing channel, the game is a no-payoff game irrespective of the degree of entanglement in the initial state for the larger values of decoherence parameter. The deeoherenee gets the cooperators worse off.