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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/51607
- Entanglement evolution of two remote and non-identical Jaynes-Cummings atoms
- Chan, Stanley; Reid, M. D.; Ficek, Z.
- 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
- Journal of Physics B: Atomic Molecular and Optical Physics, Vol. 42, no. 6 (Mar 2009), p. 12
- Publication year
- FOR Code(s)
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0205 Optical Physics
- Atoms; Cavity field; Decoherence; Entanglement; Jaynes-Cummings model; Quantum; Sudden-death
- Institute of Physics Publishing
- Publisher URL
- Copyright © 2009 IOP Publishing Ltd.
- Peer reviewed