介观LC电路在时变电源作用下量子态的演化  

Evolution of quantum state in the mesoscopic LC circuit driven by a time dependent source

作　　者：夏小建[1] 

机构地区：[1]泉州师范学院物理系,福建泉州362000

出　　处：《量子电子学报》2009年第6期694-697,共4页Chinese Journal of Quantum Electronics

基　　金：泉州师范学院重点学科建设经费资助

摘　　要：采用Wei-Norman方法,求出含时变电压源的介观LC电路随时间演化的精确解,应用相空间准概率分布函数,研究了时变电源作用下介观LC电路相干态的量子特性,结果表明此函数是一个二维运动的Gauss波包,其中心电量和磁通呈余弦和正弦变化。The exact solution of time evolution of quantum state in the mesoscopic LC circuit driven by a time dependent source were obtained by applying the Wei-Norman method. The quasi-probability distribution functions of phase space was used to investigate the quantum state of the mesoscopic LC circuit in coherent state. The results show that the function of the system is two dimension motional Gauss wave-packet. The centre charge and flux of the wave-packet vary with cosine and sine wave.

关 键 词：量子光学 LC回路 介观电路 相干态 量子态演化 相空间的准概率分布函数 

分 类 号：O431.2[机械工程—光学工程]