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Propagating wave packets and quantized currents in coherently driven polariton superfluids
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Szymanska, M. H. (Marzena H.), Marchetti, F. (Fabio) and Sanvitto, Daniele (2010) Propagating wave packets and quantized currents in coherently driven polariton superfluids. Physical Review Letters, Volume 105 (Number 23). p. 236402. doi:10.1103/PhysRevLett.105.236402 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.105.236402
Abstract
We study the properties of propagating polariton wave packets and their connection to the stability of doubly charged vortices. Wave-packet propagation and related photoluminescence spectra exhibit a rich behavior dependent on the excitation regime. We show that, because of the nonquadratic polariton dispersion, doubly charged vortices are stable only when initiated in wave packets propagating at small velocities. Vortices propagating at larger velocities, or those imprinted directly into the polariton optical parametric oscillator signal and idler, are unstable to splitting.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Wave packets, Semiconductors, Quantum electrodynamics, Polaritons, Superfluidity | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 30 November 2010 | ||||
| Dates: |
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| Volume: | Volume 105 | ||||
| Number: | Number 23 | ||||
| Page Range: | p. 236402 | ||||
| DOI: | 10.1103/PhysRevLett.105.236402 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | European Science Foundation (ESF), Spain. Ministerio de Educación y Ciencia (MEC), Community of Madrid (CAM) | ||||
| Grant number: | QOIT-CSD2006-00019 (MEC), S2009/ESP-1503 (CAM) |
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