Entanglement evolution of two remote and non-identical Jaynes-Cummings atoms

Chan, Stanley, Reid, M. D. and Ficek, Z. (2009) Entanglement evolution of two remote and non-identical Jaynes-Cummings atoms. Journal of Physics B: Atomic, Molecular and Optical Physics, 42 6: 065507-1-065507-12. doi:10.1088/0953-4075/42/6/065507


Author Chan, Stanley
Reid, M. D.
Ficek, Z.
Title Entanglement evolution of two remote and non-identical Jaynes-Cummings atoms
Journal name Journal of Physics B: Atomic, Molecular and Optical Physics   Check publisher's open access policy
ISSN 0953-4075
1361-6455
Publication date 2009-03-28
Sub-type Article (original research)
DOI 10.1088/0953-4075/42/6/065507
Volume 42
Issue 6
Start page 065507-1
End page 065507-12
Total pages 12
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Language eng
Abstract A detailed treatment of the entanglement dynamics of two distant but non-identical systems is presented. We study the entanglement evolution of two remote atoms interacting independently with a cavity field, as in the double Jaynes–Cummings model. The four-qubit pairwise concurrences are studied, allowing for asymmetric atom–cavity couplings and off-resonant interactions. Counter to intuition, imperfect matching can prove advantageous to entanglement creation and evolution. For two types of initial entanglement, corresponding to spin-correlated and anti-correlated Bell states Φ and Ψ, a full, periodic and directed transfer of entanglement into a specific qubit pair is possible, for resonant interactions, depending on the choice of relative couplings. Furthermore, entanglement transfer and sudden death (ESD) can be prevented using off-resonant interactions, although for some initial states, detunings will trigger an otherwise frozen entanglement, to allow a full entanglement transfer.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Article # 065507

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
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Created: Thu, 03 Sep 2009, 08:28:52 EST by Mr Andrew Martlew on behalf of Physics