Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model

doi:10.1088/1674-1056/22/2/020302

中国物理B ›› 2013, Vol. 22 ›› Issue (2): 20302-020302.doi: 10.1088/1674-1056/22/2/020302

Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model

M. Arsenijević^a, J. Jeknić-Dugić^b, M. Dugić^a

a Department of Physics, Faculty of Science, Kragujevac, Serbia;
b Department of Physics, Faculty of Science and Mathematics, Niš, Serbia

收稿日期:2012-07-24 修回日期:2012-08-30 出版日期:2013-01-01 发布日期:2013-01-01
基金资助:
Project financially supported by the Ministry of Science Serbia (Grant No. 171028).

Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model

M. Arsenijević^a, J. Jeknić-Dugić^b, M. Dugić^a

a Department of Physics, Faculty of Science, Kragujevac, Serbia;
b Department of Physics, Faculty of Science and Mathematics, Niš, Serbia

Received:2012-07-24 Revised:2012-08-30 Online:2013-01-01 Published:2013-01-01
Contact: M. Arsenijević E-mail:momirarsenijevic@gmail.com
Supported by:
Project financially supported by the Ministry of Science Serbia (Grant No. 171028).

摘要/Abstract

摘要： The composite systems can be non-uniquely decomposed into parts (subsystems). Not all decompositions (structures) of a composite system are equally physically relevant. In this paper we answer on theoretical ground why it may be so. We consider a pair of mutually un-coupled modes in the phase space representation that are subjected to the independent quantum amplitude damping channels. By investigating asymptotic dynamics of the degrees of freedom, we find that the environment is responsible for the structures non-equivalence. Only one structure is distinguished by both locality of the environmental influence on its subsystems and a classical-like description.

关键词: amplitude dissipative channel, two-mode state, Kraus representation, alternate degrees of freedom

Abstract: The composite systems can be non-uniquely decomposed into parts (subsystems). Not all decompositions (structures) of a composite system are equally physically relevant. In this paper we answer on theoretical ground why it may be so. We consider a pair of mutually un-coupled modes in the phase space representation that are subjected to the independent quantum amplitude damping channels. By investigating asymptotic dynamics of the degrees of freedom, we find that the environment is responsible for the structures non-equivalence. Only one structure is distinguished by both locality of the environmental influence on its subsystems and a classical-like description.

Key words: amplitude dissipative channel, two-mode state, Kraus representation, alternate degrees of freedom

中图分类号: (Quantum mechanics)

03.65.-w

03.65.Yz (Decoherence; open systems; quantum statistical methods) 42.25.-p (Wave optics)

M. Arsenijević, J. Jeknić-Dugić, M. Dugić. Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model[J]. 中国物理B, 2013, 22(2): 20302-020302.

M. Arsenijević, J. Jeknić-Dugić, M. Dugić. Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model[J]. Chin. Phys. B, 2013, 22(2): 20302-020302.

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Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model

Asymptotic dynamics of the alternate degrees of freedom for atwo-mode system: An analytically solvable model

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