Effect of atomic spontaneous decay on entanglement in the generalized Jaynes-Cummings model

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Annals of Physics (New York)

DOI:https://doi.org/10.1016/j.aop.2009.11.008· OSTI ID:21336103

Obada, A -S.F. ^[1]; Mohamed, A -B.A. ^[2]

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1. Faculty of Science, Assiut University, Assiut (Egypt)
2. Faculty of Science Al-Azhar University, Nasr City, Cairo (Egypt)

Some aspects of the irreversible dynamics of a generalized Jaynes-Cummings model are addressed. By working in the dressed-state representation, it is possible to split the dynamics of the entanglement and coherence. The exact solution of the master equation in the case of a high-Q cavity with atomic decay is found. Effects of the atomic spontaneous decay on the temporal evolution of partial entropies of the atom or the field and the total entropy as a quantitative measure entanglement are elucidated. The degree of entanglement, through the sum of the negative eigenvalues of the partially transposed density matrix and the negative mutual information has been studied and compared with other measures.

• OSTI ID: 21336103
• Journal Information: Annals of Physics (New York), Vol. 325, Issue 3; Other Information: DOI: 10.1016/j.aop.2009.11.008; PII: S0003-4916(09)00226-7; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-4916
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DENSITY MATRIX
EIGENVALUES
ENTROPY
EQUATIONS
EVOLUTION
EXACT SOLUTIONS
QUANTUM ENTANGLEMENT