The separability of two-mode Gaussian state under amplification and symmetric damping
Chen Xiao-Yu (陈小余)a)†, Jiang Li-Zhen (蒋丽珍)a), and Wu Liang-Neng (邬良能)b)
a College of Information and Electronic Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; b College of Science, China Institute of Metrology, Hangzhou 310034, China
Abstract 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.
Received: 11 October 2006
Revised: 06 March 2007
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10575092), the
Zhejiang Province Natural Science Foundation (Grant No RC104265) and
General Administration of Quality Supervision,Inspection and
Quarantine of China (Grant No
Cite this article:
Chen Xiao-Yu (陈小余), Jiang Li-Zhen (蒋丽珍), and Wu Liang-Neng (邬良能) The separability of two-mode Gaussian state under amplification and symmetric damping 2007 Chinese Physics 16 2237
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