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Covariance, correlation and entanglement

Citation

Davis, RIA and Delbourgo, R and Jarvis, PD, Covariance, correlation and entanglement, Journal of Physics A-Mathematical and General, 33, (9) pp. 1895-1914. ISSN 0305-4470 (2000) [Refereed Article]

DOI: doi:10.1088/0305-4470/33/9/312

Abstract

Some new identities for quantum variance and covariance involving commutators are presented, in which the density matrix and the operators are treated symmetrically. A measure of entanglement is proposed for bipartite systems, based upon covariance. This works for two-and three-component systems but produces ambiguities for multicomponent systems of composite dimension. Its relationship to angular momentum dispersion for symmetric spin states is described.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Other Physical Sciences
Research Field:Physical Sciences not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Davis, RIA (Mr Richard Ian Arthur Davis)
Author:Delbourgo, R (Professor Robert Delbourgo)
Author:Jarvis, PD (Dr Peter Jarvis)
ID Code:18570
Year Published:2000
Web of Science® Times Cited:11
Deposited By:Physics
Deposited On:2000-08-01
Last Modified:2001-05-07
Downloads:0

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