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Acta Physica Sinica

QUANTUM FLUCTUATIONS OF CHARGE AND CURRENT IN MESOSCOPIC RLC CIRCUIT IN SQUEEZED VACUUM STATE

Gu Yong-Jian, 昌潍师专物理系，山东潍坊 261043

Published Jan 1, 2000• 1 citation
Publisher

Abstract

A method of quantizing an active RLC circuit is developed, and the quantum fluctuations of the charge and current in the mesoscopic RLC circuit in the squeezed vacuum state, especially the influences of the resistance and the squeezing parameters on the quantum fluctuations are investigated.
DOI
10.7498/aps.49.965

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Mesoscopic series-parallel connection RLC circuit is quantized by the method of damped harmonic oscillator operation.On this basic theory,quantum fluctuations of the current and voltage of each branch in excitation state of the squeezed vacuum state,squeezed vacuum state and vacuum state are studied.The result shows that the quantum fluctuations of the current and voltage of each branch are related with not only parameter of the circuit element,but also quantum number of excitation,squeezed coefficients and squeezed angle.These fluctuations decay with time because of damped resistance.