,Dynamical nonlocality of the entangled coherent state in the phase damping model

• 作 者: Lu Huai-Xin Li Ying-De
• 机 构: Department of Physics and Electronic Science, Weifang University, Weifang 261061, China
• 出 处: 中国物理B（英文版）
• 发表日期: 2009年1期
• 关键词: entangled coherent state nonlocality dynamics Bell operators

This paper studies the dynamics of nonlocality for a bosonic entangled coherent state in a phase damping model. The density operator of the system is solved by using a superoperator method. The dynamics of nonlocality for the bosonic entangled coherent state is uncovered by the Bell operator based on the pseudospin operator of a light field. The dynamics of the nonlocality for this state has also been studied by other Bell operators. The result of the numerical calculations of the Bell function shows that the quantum nonlocality heavily depends on the chosen Bell operator.