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.
出处
《量子电子学报》
CAS
CSCD
北大核心
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
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
quantum optics
LC circuit
mesoscopic circuit
coherent states
evolution of quantum state
quasi-probability distribution functions of phase space
