级联三能级原子的偶极振幅平方压缩

Dipole Amplitude-squared Squeezing of a Three-level Cascade Atom

本文在文献［４］的基础上，定义了三能级原子的偶极振幅平方算符，进而由海森伯测不准关系，提出了三能级原子的偶极振幅平方压缩．研究了与关联双模压缩真空场作用的级联三能级原子的偶极振幅平方压缩效应．通过数值计算，讨论了初始压缩光场的压缩参数、单光子失谐量以及原子—光场耦合强度对原子偶极振幅平方压缩的影响．

Based on the reference [4], a dipole amplitude-squared operator of a three-level atom is defined, and a dipole amplitude-squared squeezing of a three-level atom is also given with the uncertainty relationship of Hessenbery. The dipole amplitude-squared squeezing effects of a threelevel cascade atom interacting with a correlated two-mode squeezed vacuum field are investigated. Based on the numerical calculations, the influences of the squeezing parameters of the initial squeezed state field, the frequency detuning value of the mono-photon and the intensity of atomfield coupling on the atomic dipole amplitude-squared squeezing are discussed.