The mesoscopic nonlinear inductance-capacitance circuit is a typical anharmonic oscillator,due to diodesincluded in the circuit.In this paper,using the advanced quantum theory of mesoscopic circuits,which based on the...The mesoscopic nonlinear inductance-capacitance circuit is a typical anharmonic oscillator,due to diodesincluded in the circuit.In this paper,using the advanced quantum theory of mesoscopic circuits,which based on thefundamental fact that the electric charge takes discrete value,the diode included mesoscopic circuit is firstly studied.Schr(o|¨)dinger equation of the system is a four-order difference equation in (?) rep esentation.Using the extended perturbativemethod,the detail energy spectrum and wave functions are obtained and verified,as an application of the results,thecurrent quantum fluctuation in the ground state is calculated.Diode is a basis component in a circuit,its quantizationwould popularize the quantum theory of mesoscopic circuits.The methods to solve the high order difference equationare helpful to the application of mesoscopic quantum theory.展开更多
基金Supported by National Natural Science Foundation of China under Grant No.10575028
文摘The mesoscopic nonlinear inductance-capacitance circuit is a typical anharmonic oscillator,due to diodesincluded in the circuit.In this paper,using the advanced quantum theory of mesoscopic circuits,which based on thefundamental fact that the electric charge takes discrete value,the diode included mesoscopic circuit is firstly studied.Schr(o|¨)dinger equation of the system is a four-order difference equation in (?) rep esentation.Using the extended perturbativemethod,the detail energy spectrum and wave functions are obtained and verified,as an application of the results,thecurrent quantum fluctuation in the ground state is calculated.Diode is a basis component in a circuit,its quantizationwould popularize the quantum theory of mesoscopic circuits.The methods to solve the high order difference equationare helpful to the application of mesoscopic quantum theory.