在Fock态制备中信号光场密度算符距离的演化

Evolution of the Distance ofDensity Operator of the Signal Feild inthe Preparation of Fock State

应用密度算符的距离来分析在基于交叉相互作用的Fock态制备中信号光场的态是如何演化并坍缩到Fock态上的。结果证明,这种距离的概念在描述体系动力学行为时十分有用。

The distance of the density operator is used to study how the state of signal field in the preparation of Fock state based the cross -phase modulation interaction evolve and collapse into Fock state. It has been shown that the concept of this kind distance is very useful in the description of the dynamics of the system.