European Physical Journal D, ( ISI ), Volume (57), No (2), Year (2010-4) , Pages (271-279)

Title : ( Entanglement dynamics and decoherence of an atom coupled to a dissipative cavity field )

Authors: Seyed Javad Akhtarshenas , Maryam Khezrian ,

Citation: BibTeX | EndNote

In this paper, we investigate the entanglement dynamics and decoherence in the interacting system of a strongly driven two-level atom and a single mode vacuum field in the presence of dissipation for the cavity field. Starting with an initial product state with the atom in a general pure state and the field in a vacuum state, we show that the final density matrix is supported on C2⊗C2 space, and therefore, the concurrence can be used as a measure of entanglement between the atom and the field. The influences of the cavity decay on the quantum entanglement of the system are also discussed. We also examine the Bell-CHSH violation between the atom and the field and show that there are entangled states for which the Bell-BCSH inequality is not violated. Using the above system as a quantum channel, we also investigate the quantum teleportation of a generic qubit state and also a two-qubit entangled state, and show that in both cases the atom-field entangled state can be useful to teleport an unknown state with fidelity better than any classical channel.

Keywords

, Entanglement dynamics, Decoherence, Jaynes-Cummings model, Disspative
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1039122,
author = {Akhtarshenas, Seyed Javad and Maryam Khezrian},
title = {Entanglement dynamics and decoherence of an atom coupled to a dissipative cavity field},
journal = {European Physical Journal D},
year = {2010},
volume = {57},
number = {2},
month = {April},
issn = {1434-6060},
pages = {271--279},
numpages = {8},
keywords = {Entanglement dynamics; Decoherence; Jaynes-Cummings model; Disspative cavity},
}

[Download]

%0 Journal Article
%T Entanglement dynamics and decoherence of an atom coupled to a dissipative cavity field
%A Akhtarshenas, Seyed Javad
%A Maryam Khezrian
%J European Physical Journal D
%@ 1434-6060
%D 2010

[Download]