,The separability of two-mode Gaussian state under amplification and symmetric damping

• 作 者: Chen Xiao-Yu Jiang Li-Zhen Wu Liang-Neng
• 机 构: College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, C
• 出 处: 中国物理（英文版）
• 发表日期: 2007年8期
• 关键词: parametric amplifier amplitude damping characteristic function separability

The performances of a two-mode Gaussian state under parametric amplification, symmetric amplitude damping and thermal noise are studied. The time-dependent complex correlation matrix of the state in evolution is given. The separability of the final two-mode Gaussian state is examined under symmetric amplification and asymmetric amplification separately.