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Subsystem purity as an enforcer of Entanglement

Subsystem purity as an enforcer of Entanglement
Subsystem purity as an enforcer of Entanglement

Entanglement can be generated from a very small amount of purity existing in an overall very mixed state. This possibility is demonstrated in the context of a pure state atom interacting with a mixed state quantum field through the Jaynes-Cummings model (JCM). A lower bound on the entanglement produced is given as a function of the temperature of the cavity field and time.

0031-9007
050401/1-050401/4
Bose, S.
d8763294-bd75-4347-9219-a8a70c0f4ae8
Fuentes-Guridi, I.
95d5d6e9-eac5-447c-b27e-e2860671c1e6
Knight, P. L.
0d88caf6-3179-4c34-890b-6f2bade693db
Vedral, V.
03967f4d-6ba1-4c49-8b10-0dc83e4f8546
Bose, S.
d8763294-bd75-4347-9219-a8a70c0f4ae8
Fuentes-Guridi, I.
95d5d6e9-eac5-447c-b27e-e2860671c1e6
Knight, P. L.
0d88caf6-3179-4c34-890b-6f2bade693db
Vedral, V.
03967f4d-6ba1-4c49-8b10-0dc83e4f8546

Bose, S., Fuentes-Guridi, I., Knight, P. L. and Vedral, V. (2001) Subsystem purity as an enforcer of Entanglement. Physical Review Letters, 87 (5), 050401/1-050401/4, [050401]. (doi:10.1103/PhysRevLett.87.050401).

Record type: Article

Abstract

Entanglement can be generated from a very small amount of purity existing in an overall very mixed state. This possibility is demonstrated in the context of a pure state atom interacting with a mixed state quantum field through the Jaynes-Cummings model (JCM). A lower bound on the entanglement produced is given as a function of the temperature of the cavity field and time.

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More information

Published date: 30 July 2001

Identifiers

Local EPrints ID: 480315
URI: http://eprints.soton.ac.uk/id/eprint/480315
DOI: doi:10.1103/PhysRevLett.87.050401
ISSN: 0031-9007
PURE UUID: 6c38dbec-e9ba-40d1-820f-84ad322166ae

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Date deposited: 01 Aug 2023 17:18
Last modified: 17 Mar 2024 00:36

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Contributors

Author: S. Bose
Author: I. Fuentes-Guridi
Author: P. L. Knight
Author: V. Vedral

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