Vortex-antivortex pair dynamics in an exciton-polariton condensate

Details Vortex-antivortex pair dynamics in an exciton-polariton condensate Vortex-antivortex pair dynamics in an exciton-polariton condensate

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11k3048f&link_type=abstract

New Journal of Physics, Volume 11, Issue 11, pp. 113048 (2009).

Physics

6

Scientific paper

The study of superfluid and Berezinskii-Kosterlitz-Thouless phases in exciton-polaritons requires an understanding of vortex dynamics in a dissipative unconfined condensate. In this paper we study the motion of dynamic vortex-antivortex pairs and show that vortex pair stability defined as ordered motion as opposed to rapid separation or recombination is the result of balance between dissipative velocities in the condensate and interaction with thermal polaritons. The addition of a trapping potential is further shown to considerably enhance the lifetime of a single-vortex pair in this system. These investigations have important consequences for interpretation of recent results and future investigations of two-dimensional superfluid phases in polariton condensates.

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