隧穿量子点分子模型与光场相互作用的量子信息保真度  

Fidelity of quantum information of a tunneling quantum dot molecule model interacting with a cavity field

作　　者：曾小祥[1] 周青春[1] 

机构地区：[1]江苏科技大学数理学院,镇江212003

出　　处：《原子与分子物理学报》2010年第2期318-322,共5页Journal of Atomic and Molecular Physics

基　　金：江苏省教育厅资助项目(08KJD140008);江苏科技大学人才计划基金项目(2006SL126J)

摘　　要：利用全量子理论和数值计算方法,研究隧穿量子点分子模型与光场相互作用的量子信息保真度,通过计算机模拟出量子点分子、光场和系统的保真度随时间的演化图像,分析了压缩系数和失谐量对量子信息保真度的影响.结果表明:改变初始光场的压缩系数和失谐量能调节相互作用系统的量子信息保真度.The fidelities of quantum information of a tunneling quantum dot molecule model interacting with a cavity field are studied by means of the fully quantum theory and numerical calculations. With the help of the computer simulation, the time evolution of fidelity of the quantum dot molecule, the field and the system is obtained; the squeezing coefficient and the detuning impact on the quantum information fidelities, which is analyzed, the results show that we can adjust the quantum information fidelities by means of changing the squeezing coefficients of the initial optical field and the detuning in the system of interaction.

关 键 词：量子光学 量子态保真度 隧穿量子点分子 

分 类 号：O431.2[机械工程—光学工程]