QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT  IN DISPLACED SQUEEZED FOCK STATE

doi:10.1088/1009-1963/10/6/305

中国物理B ›› 2001, Vol. 10 ›› Issue (6): 490-493.doi: 10.1088/1009-1963/10/6/305

QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE

顾永建

Department of Physics, Weifang University, Weifang 261043, China

收稿日期:2000-12-15 修回日期:2001-01-18 出版日期:2005-06-12 发布日期:2005-06-12

QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE

Gu Yong-jian (顾永建)

Department of Physics, Weifang University, Weifang 261043, China

Received:2000-12-15 Revised:2001-01-18 Online:2005-06-12 Published:2005-06-12

摘要/Abstract

摘要： We study the quantum effects of a damped LC parallel circuit considering its different performance from an RLC series circuit in classical physics. The damped LC parallel circuit with a source is quantized and the quantum fluctuations of magnetic flux and electric charge in the circuit in displaced squeezed Fock state are investigated. It is shown that, as in the RLC series circuit, the fluctuations only depend on the squeezing parameter and the parameters of the circuit components in the damped LC parallel circuit, but the effects of the circuit components on the fluctuations are different in the two circuits.

Abstract: We study the quantum effects of a damped LC parallel circuit considering its different performance from an RLC series circuit in classical physics. The damped LC parallel circuit with a source is quantized and the quantum fluctuations of magnetic flux and electric charge in the circuit in displaced squeezed Fock state are investigated. It is shown that, as in the RLC series circuit, the fluctuations only depend on the squeezing parameter and the parameters of the circuit components in the damped LC parallel circuit, but the effects of the circuit components on the fluctuations are different in the two circuits.

Key words: mesoscopic circuit, damped LC parallel circuit, displaced squeezed Fock state, quantum fluctuation

中图分类号: (Fluctuation phenomena, random processes, noise, and Brownian motion)

05.40.-a

03.65.-w (Quantum mechanics) 73.23.-b (Electronic transport in mesoscopic systems)

顾永建. QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE[J]. 中国物理B, 2001, 10(6): 490-493.

Gu Yong-jian (顾永建). QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE[J]. Chinese Physics, 2001, 10(6): 490-493.

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QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE

QUANTUM FLUCTUATIONS IN A MESOSCOPIC DAMPED LC PARALLEL CIRCUIT IN DISPLACED SQUEEZED FOCK STATE

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