Quantum Fluctuations of a Mesoscopic Capacitance Coupled Circuit with Power Source
ZHANG Shou1,2, ZHAO Yong-Fang2, JING Xiao-Gong2, QIAN Zheng-Nan2, SU Wen-Hui2
1Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002
2Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001
Quantum Fluctuations of a Mesoscopic Capacitance Coupled Circuit with Power Source
1Department of Physics, College of Science and Engineering, Yanbian University, Yanji 133002
2Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001
Abstract： Starting from classical equations of motion of the charges, we obtain the quantum fluctuations of the charges, and the currents of a mesoscopic capacitance coupled circuit with power source by using a canonical transformation and a unitary transformation. The uncertainty relations between charges and conjugate currents do not satisfy the minimum uncertainty relation, and is independent of the power source.
2003, Vol. 20 
