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Spontaneous and triggered vortices in polariton optical-parametric-oscillator superfluids

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Marchetti, F. M., Szymanska, M. H. (Marzena H.), Tejedor, C. and Whittaker, D. M. (2010) Spontaneous and triggered vortices in polariton optical-parametric-oscillator superfluids. Physical Review Letters, Vol.105 (No.6). Article: 063902. doi:10.1103/PhysRevLett.105.063902

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.105.063902

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Abstract

We study nonequilibrium polariton superfluids in the optical-parametric-oscillator regime by using a Gross-Pitaevskii equation with pumping and decay. We identify a regime above the optical-parametric-oscillator threshold, where the system undergoes spontaneous symmetry breaking and is unstable towards vortex formation without any rotating drive. Stable vortex solutions differ from metastable ones; the latter can persist but can be triggered only externally. Both spontaneous and triggered vortices are characterized by a generalized healing length, specified by the optical-parametric-oscillator parameters only.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 4 August 2010
Dates:
DateEvent
4 August 2010Published
Volume: Vol.105
Number: No.6
Number of Pages: 4
Page Range: Article: 063902
DOI: 10.1103/PhysRevLett.105.063902
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Spanish MEC, CAM
Grant number: MAT2008-01555, QOIT-CSD2006-00019, S-2009/ESP-1503

Data sourced from Thomson Reuters' Web of Knowledge

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