Coherence-enhanced and -controlled entanglement of two atoms in a single-mode thermal field

We have investigated the entanglement of two identical two-level atoms in a single-mode thermal reservoir when these two atoms are initially prepared in coherent states. It is discovered that the dynamical entanglement is greatly enhanced due to initial atomic coherence as compared with the case whe...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2006-09, Vol.39 (18), p.3805-3814
Main Authors: Wang, Xian-ying, Du, Si-de, Chen, Xiao-shuang
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Foundations, theory of measurement, miscellaneous theories (including aharonov-bohm effect, bell inequalities, berry's phase)
Physics
Quantum information
Quantum mechanics
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Summary:We have investigated the entanglement of two identical two-level atoms in a single-mode thermal reservoir when these two atoms are initially prepared in coherent states. It is discovered that the dynamical entanglement is greatly enhanced due to initial atomic coherence as compared with the case when the atoms are initially prepared in incoherent states. It is very valuable that we can manipulate the atomic entanglement by changing the relative phases and amplitudes of the polarized atoms.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/39/18/010