Entanglement sharing and decoherence in the spin-bath

Dawson, C. M., Hines, A. P., McKenzie, R. H. and Milburn, G. J. (2005) Entanglement sharing and decoherence in the spin-bath. Physical Review A, 71 5: 052321. doi:10.1103/PhysRevA.71.052321

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Author Dawson, C. M.
Hines, A. P.
McKenzie, R. H.
Milburn, G. J.
Title Entanglement sharing and decoherence in the spin-bath
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2005
Sub-type Article (original research)
DOI 10.1103/PhysRevA.71.052321
Open Access Status File (Publisher version)
Volume 71
Issue 5
Start page 052321
Total pages 6
Editor B. Crasemann
Place of publication United States of America
Publisher American Physical Society
Collection year 2005
Language eng
Subject C1
240301 Atomic and Molecular Physics
780102 Physical sciences
Abstract The monogamous nature of entanglement has been illustrated by the derivation of entanglement-sharing inequalities-bounds on the amount of entanglement that can be shared among the various parts of a multipartite system. Motivated by recent studies of decoherence, we demonstrate an interesting manifestation of this phenomena that arises in system-environment models where there exists interactions between the modes or subsystems of the environment. We investigate this phenomenon in the spin-bath environment, constructing an entanglement-sharing inequality bounding the entanglement between a central spin and the environment in terms of the pairwise entanglement between individual bath spins. The relation of this result to decoherence will be illustrated using simplified system-bath models of decoherence.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Quantum
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 05:27:59 EST