Chaotic resonances of a Bose-Einstein condensate in a cavity pumped by a modulated optical field

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Diver, M. and Robb, G. R. M. and Oppo, G.-L. (2015) Chaotic resonances of a Bose-Einstein condensate in a cavity pumped by a modulated optical field. Physical Review A, 91 (3). 033622. ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.91.033622)

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Abstract

We present a theoretical analysis of a Bose-Einstein condensate (BEC) enclosed in an optical cavity driven by a modulated external laser beam where the cavity-field variable is adiabatically eliminated. The modulation of the amplitude of the pump laser induces nonlinear resonances and the widespread presence of chaotic oscillations even when repulsive atom-atom interactions are negligible. Close to resonance, varying the modulation amplitude by just a few percent causes abrupt and erratic changes to the output laser intensity with peak power increasing by almost an order of magnitude. We also use a simplified model of the BEC-cavity system that considers only a small number of spatial modes of the BEC to show that, despite the disruptive presence of a modulation in the pump beam, the system can still be considered to be low-dimensional.

ORCID iDs

Diver, M. ORCID logoORCID: https://orcid.org/0000-0001-7948-7648, Robb, G. R. M. ORCID logoORCID: https://orcid.org/0000-0002-3004-5926 and Oppo, G.-L. ORCID logoORCID: https://orcid.org/0000-0002-5376-4309;
  • Item type:Article
    ID code:53810
    Dates:
    Date
    Event
    19 March 2015
    Published
    20 February 2015
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:21 Jul 2015 14:58
    Last modified:11 Nov 2024 11:02
    URI:https://strathprints.strath.ac.uk/id/eprint/53810
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