Entanglement trapping in a nonstationary structured reservoir

Lazarou, C., Luoma, K, Maniscalco, S, Piilo, J and Garraway, B M (2012) Entanglement trapping in a nonstationary structured reservoir. Physical Review A, 86 (1). 012331-012340. ISSN 1050-2947

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Abstract

We study a single two-level atom interacting with a reservoir of modes defined by a reservoir structure function with a frequency gap. Using the pseudomodes technique, we derive the main features of a trapping state formed in the weak coupling regime. Utilizing different entanglement measures we show that strong correlations and entanglement between the atom and the modes are in existence when this state is formed. Furthermore, an unexpected feature for the reservoir is revealed. In the long time limit and for weak coupling the reservoir spectrum is not constant in time.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Barry Garraway
Date Deposited: 31 Jul 2012 09:33
Last Modified: 07 Mar 2017 04:55
URI: http://sro.sussex.ac.uk/id/eprint/40284

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