量子化介观RLC并联电路在热真空态下的量子效应

J4 ›› 2012, Vol. 29 ›› Issue (5): 561-565.

量子化介观RLC并联电路在热真空态下的量子效应

杨庆怡,易施光,万玲玉

广西大学物理科学与工程技术学院, 广西南宁 530004

收稿日期:2011-07-15 修回日期:2011-08-31 出版日期:2012-09-28 发布日期:2012-09-02
通讯作者: 杨庆怡 (1963-)广西融安人，教授，博士, 主要从事量子光学与介观电路量子效应的研究。 E-mail:yangqingyi8@tom.com。
基金资助:
国家自然科学基金 (10964001) 资助课题

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

YANG Qing-yi , YI Shi-guang, WAN Ling-yu

College of Physics Science and Technology, Guangxi University, Nanning 530004, China

Received:2011-07-15 Revised:2011-08-31 Published:2012-09-28 Online:2012-09-02

摘要/Abstract

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, 并且具有如下规律, 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。

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

Abstract:

The quantum effects of the general quantized mesoscopic RLC parallel circuit were studied base on the thermal field dynamics theory. The quantum fluctuations of the voltage and the current in each branch which depended on the factors such as the elements of the circuit, the thermal vaccum state and the time were analyzed. The results show that the quantum fluctuations in each brand are affected by all the three factors with follow regularity when the quantized mesoscopic circuit 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 are depend on the elements of the circuit and the temperature of the thermal vaccum state.

Key words: quantum optics, quantum fluctuation, mesoscopic RLC parallel circuit, thermal vacuum state, dissipative resistance

中图分类号:

O431.2

杨庆怡易施光万玲玉. 量子化介观RLC并联电路在热真空态下的量子效应[J]. J4, 2012, 29(5): 561-565.

YANG Qing-yi, YI Shi-guang, WAN Ling-yu. Quantum fluctuations of general quantized mesoscopic RLC parallel circuit in thermal vaccum state[J]. J4, 2012, 29(5): 561-565.

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