量子相位与相于态

Quantum phase and coherent state

本文从量子论的基本特征出发,论述了相对相位是一切干涉现象的基础,并用微扰论和量子力学路径积分两种方法证明了:当入射光场和受激辐射场的相位相同时,场对原于跃迁几率的贡献有最大值。

In this paper, starting from the basic characteristic of quantum theory, relative phase is expounded as the basis of all interference phenomena. Through both pertubation theory and path integral of quantum mechanics methods respectively, we show that the transition probability of an atom have a m ximum when the phase of the incident field is consistent with that of the stimulated radiation field.