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Title: Dynamics of nonequilibrium Dicke models
Authors: Bhaseen, M. J.
Mayoh, J.
Simons, B. D.
Keeling, J.
Keywords: QC Physics
Issue Date: 17-Jan-2012
Citation: Bhaseen , M J , Mayoh , J , Simons , B D & Keeling , J 2012 , ' Dynamics of nonequilibrium Dicke models ' Physical Review. A, Atomic, molecular, and optical physics , vol 85 , no. 1 , 013817 . , 10.1103/PhysRevA.85.013817
Abstract: Motivated by experiments observing self-organization of cold atoms in optical cavities we investigate the collective dynamics of the associated non-equilibrium Dicke model. The model displays a rich semiclassical phase diagram of long time attractors including distinct superradiant fixed points, bistable and multistable coexistence phases and regimes of persistent oscillations. We explore the intrinsic timescales for reaching these asymptotic states and discuss the implications for finite duration experiments. On the basis of a semiclassical analysis of the effective Dicke model we find that sweep measurements over 200ms may be required in order to access the asymptotic regime. We briefly comment on the corrections that may arise due to quantum fluctuations and states outside of the effective two-level Dicke model description.
Version: Postprint
Status: Peer reviewed
ISSN: 1050-2947
Type: Journal article
Rights: This is the author's version of this article. The published version (c) 2012 American Physical Society is available from DOI: 10.1103/PhysRevA.85.013817
Appears in Collections:University of St Andrews Research
Physics & Astronomy Research

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