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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. 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 |
|---|---|
| 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 |
| Volume: | Vol.105 |
| Number: | No.6 |
| Number of Pages: | 4 |
| Page Range: | Article: 063902 |
| Identification Number: | 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 |
| URI: | http://wrap.warwick.ac.uk/id/eprint/5406 |
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