A1 Refereed original research article in a scientific journal
Entanglement trapping in a nonstationary structured reservoir
Authors: Lazarou C, Luoma K, Maniscalco S, Piilo J, Garraway BM
Publisher: AMER PHYSICAL SOC
Publication year: 2012
Journal: Physical Review A
Journal name in source: PHYSICAL REVIEW A
Journal acronym: PHYS REV A
Article number: ARTN 012331
Number in series: 1
Volume: 86
Issue: 1
Number of pages: 9
ISSN: 1050-2947
DOI: https://doi.org/10.1103/PhysRevA.86.012331
Self-archived copy’s web address: https://arxiv.org/abs/1205.5401
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.
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.
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