中国物理B ›› 2010, Vol. 19 ›› Issue (3): 34206-034206.doi: 10.1088/1674-1056/19/3/034206
王继锁, 范洪义, 孟祥国
Wang Ji-Suo(王继锁)†, Fan Hong-Yi(范洪义), and Meng Xiang-Guo(孟祥国)
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.
中图分类号: (Quantum fluctuations, quantum noise, and quantum jumps)