The separability of the evolved tripartite Gaussian state
Xiaoyu Chen · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2007
We consider the time evolution of the tripartite three mode Gaussian state which is initially prepared in genuine entangled pure state. The state undergoes parametric amplification and amplitude damping as well as thermal noise. The correlation matrix of the evolved state is studied in the symmetrical case. The separability conditions are given.