隧穿量子点分子模型与光场相互作用系统的量子点分子偶极压缩  

Quantum dot molecule dipole squeezing in the system of a tunneling quantum molecule model interacting with a cavity field

作　　者：周青春[1] 曾小祥[1] 

机构地区：[1]江苏科技大学数理学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2011年第2期200-204,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：江苏省高校自然科学基金资助项目(08KJD140008)

摘　　要：利用全量子理论,研究了隧穿量子点分子模型与光场相互作用系统的量子点分子偶极压缩效应.采用数值计算方法,讨论了初始相干态光场的平均光子数和失谐量对量子点分子偶极压缩的影响.结果表明:在实际中可以通过调节失谐量,获得最佳状态的量子点分子偶极压缩.当初始光场的平均光子数较小时,量子点分子偶极压缩的演化曲线呈现出间歇性的量子点分子偶极压缩,当初始光场的平均光子数较大时,其演化曲线完全处于量子点分子偶极压缩状态.Quantum dot molecule dipole squeezing effect in the system of a tunneling quantum molecule model interacting with a cavity field is studied by using the fully quantum theory.The effects of the mean photon number of the initial field and the detuning on the quantum dot molecule dipole squeezing are discussed by the method of the numerical calculations.The results show we may obtain the dipole squeezing at its best by adjusting values of the detuning in reality.It presents an intermittent quantum dot molecule dipole squeezing when the mean photon number of the initial field is small.However,it is all in quantum dot molecule dipole squeezing states when the mean photon number of the initial field is large.

关 键 词：J-C模型 偶极压缩 量子点分子 

分 类 号：O431.2[机械工程—光学工程]