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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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