Factorization of the dephasing process in a quantum open system

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	Factorization of the dephasing process in a quantum open system
	Gao, Y. B.; Sun, C. P.; Gao, YB , Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China
刊名	PHYSICAL REVIEW E
	2007
卷号	75 期号:1 页码:-
关键词	Fluctuation-dissipation Theorem Wave-function General Picture Decoherence Dynamics
ISSN号	1539-3755
英文摘要	The fluctuation-dissipation relation is well known for a quantum open system with energy dissipation. In this paper a similar underlying relation is found between the bath fluctuation and the dephasing of the quantum open system, for which energy is conserved, but the information is leaking into the bath. To obtain this relation we revisit the universal, but simple dephasing model with a quantum nondemolition interaction between the bath and the open system. Then we show that the decoherence factor describing the dephasing process is factorized into two parts, to indicate the two sources of dephasing, the vacuum quantum fluctuation, and the thermal excitations defined in the initial state of finite temperature.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000243893400007
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5803]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Gao, YB , Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China
推荐引用方式 GB/T 7714	Gao, Y. B.,Sun, C. P.,Gao, YB , Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China. Factorization of the dephasing process in a quantum open system[J]. PHYSICAL REVIEW E,2007,75(1):-.
APA	Gao, Y. B.,Sun, C. P.,&Gao, YB , Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China.(2007).Factorization of the dephasing process in a quantum open system.PHYSICAL REVIEW E,75(1),-.
MLA	Gao, Y. B.,et al."Factorization of the dephasing process in a quantum open system".PHYSICAL REVIEW E 75.1(2007):-.