Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/51607

Title

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

Author(s)

Chan, Stanley;  Reid, M. D.;  Ficek, Z.

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 phi and psi, 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.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Journal of Physics B: Atomic Molecular and Optical Physics, Vol. 42, no. 6 (Mar 2009), p. 12

Publication year

2009

FOR Code(s)

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics;  0205 Optical Physics

Keyword(s)

Atoms;  Cavity field;  Decoherence;  Entanglement;  Jaynes-Cummings model;  Quantum;  Sudden-death

Publisher

Institute of Physics Publishing

ISSN

0953-4075

Publisher URL

http://dx.doi.org/10.1088/0953-4075/42/6/065507

Copyright

Copyright © 2009 IOP Publishing Ltd.

Peer reviewed