Quantum fluctuation in excited states of mesoscopic LC circuits at finite temperature

被引：0

作者：

王继锁 ^{[1
]}

范洪义 ^{[1
]}

孟祥国 ^{[1
]}

机构：

[1] Department of Physics,Liaocheng University

来源：

Chinese Physics B | 2010年 / 19卷 / 03期

基金：

中国国家自然科学基金;

关键词：

quantization of LC circuits at finite temperature; coherent thermo state representation; thermo number state; thermo field dynamics;

D O I：

暂无

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss quantum fluctuation in excited states(named thermo number states) of mesoscopic LC circuits at a finite temperature.By introducing the coherent thermo state into the thermo field dynamics pioneered by Umezawa and using the natural representation of thermo squeezing operator we can concisely derive the fluctuation.The result shows that the noise becomes larger when either temperature or the excitation number increases.

引用

页码：338 / 341

页数：4

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