This dissertation is organized as follows . in chapter one , firstly we review the development of quantum optics , pointing out three features of quantum optics : coherence , nonlinearity , and quantity , next something of quantum entanglement is discussed , including the conception of entangled state and definition of the degree of the entanglement , at last , the j - c model of the interaction between the atoms and the optical fields . in chapter two , we introduce the concepts and properties of coherent state and shrodinger - cat state 本文首先回顾了量子光学的发展历史，着重指出了量子光学的三个显著特征，即相干性、非线性和量子性，然后讨论了量子纠缠方面的内容，包括纠缠态的概念及其度量? ?纠缠度等，最后阐述了原子与光场相互作用的理论模型j - c模型；第二章介绍了相干态和猫态的概念及性质；第三章的内容是两纠缠原子与光场相互作用过程中光场的压缩效应。
