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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
Source PublicationPHYSICAL REVIEW E
KeywordFluctuation-dissipation Theorem Wave-function General Picture Decoherence Dynamics
AbstractThe 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.
2007
ISSN1539-3755
Volume75Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5803
Collection理论物理所科研产出_SCI论文
Corresponding AuthorGao, YB , Beijing Univ Technol, Coll Appl Sci, Beijing 100022, Peoples R China
Recommended Citation
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):-.
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