量子化介观RLC并联电路在热真空态下的量子效应  

Quantum fluctuations of general quantized mesoscopic RLC parallel circuit in thermal vaccum state

作　　者：杨庆怡[1] 易施光[1] 万玲玉[1] 

机构地区：[1]广西大学物理科学与工程技术学院,广西南宁530004

出　　处：《量子电子学报》2012年第5期561-565,共5页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(10964001)资助课题

摘　　要：根据热场动力学理论,研究了具有普遍意义的量子化介观RLC并联电路在热真空态下产生的量子效应,并分析在各支路中电流和电压的量子涨落与电路元件、环境热真空态以及时间三个方面因素的关系。结果表明,处于热真空态下的量子化介观RLC并联电路,各支路电流和电压的量子涨落均受到这三个方面因素的影响,并且电流和电压的涨落均随时间按指数规律衰减,但衰减速度仅与电路元件的参数有关,而初始时刻涨落的大小由电路元件参数和环境热真空态的温度共同决定。The quantum effects of the general quantized mesoscopic RLC parallel circuit were studied based on the thermal field dynamics theory. The quantum fluctuations of the voltage and current in each branch which depended on the factors such as the elements of circuit, thermal vaccum state and time were analyzed. The results show that the quantum fluctuations in each brand are affected by all the three factors when the quantized mesoscopic circuit is in the thermal vaccum state. The fluctuations decay with time exponentially, but the decay rate have relation to the elements of the circuit only. The amplitude of the fluctuations at the initial moment is dependent on the elements of the circuit and temperature of the thermal vaccum state.

关 键 词：量子光学 量子涨落 介观RLC并联电路 热真空态 耗散电阻 

分 类 号：O431.2[机械工程—光学工程]