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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 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.105.063902
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 | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 4 August 2010 | ||||
Dates: |
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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 |
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