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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/12064

Title: Persistent entanglement in the classical limit
Authors: Everitt, Mark J.
Clark, T.D.
Stiffell, P.B.
Ralph, J.F.
Bulsara, A.R.
Harland, C.J.
Issue Date: 2005
Publisher: © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Citation: EVERITT, M.J. ... et al., 2005. Persistent entanglement in the classical limit. New Journal of Physics, 7, 64, 9 pp.
Abstract: The apparent difficulty in recovering classical nonlinear dynamics and chaos from standard quantum mechanics has been the subject of a great deal of interest over the last 20 years. For open quantum systems—those coupled to a dissipative environment and/or a measurement device—it has been demonstrated that chaotic-like behaviour can be recovered in the appropriate classical limit. In this paper, we investigate the entanglement generated between two nonlinear oscillators, coupled to each other and to their environment. Entanglement—the inability to factorize coupled quantum systems into their constituent parts—is one of the defining features of quantum mechanics. Indeed, it underpins many of the recent developments in quantum technologies. Here, we show that the entanglement characteristics of two 'classical' states (chaotic and periodic solutions) differ significantly in the classical limit. In particular, we show that significant levels of entanglement are preserved only in the chaotic-like solutions.
Description: This article was published in the New Journal of Physics [© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft] and contains IOP Publishing information ( http://iopscience.iop.org/page/STACKS#metadata) made available under a CC-BY 3.0 licence ( http://creativecommons.org/licenses/by/3.0/).
Version: Published
DOI: 10.1088/1367-2630/7/1/064
URI: https://dspace.lboro.ac.uk/2134/12064
Publisher Link: http://dx.doi.org/10.1088/1367-2630/7/1/064
ISSN: 1367-2630
Appears in Collections:Published Articles (Physics)

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