The University of Southampton
University of Southampton Institutional Repository

Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate

Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate
Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate
Quasiparticles in semiconductors—such as microcavity polaritons—can form condensates in which the steady-state density profile is set by the balance of pumping and decay. By taking account of the polarization degree of freedom for a polariton condensate, and considering the effects of an applied magnetic field, we theoretically discuss the interplay between polarization dynamics, and the spatial structure of the pumped decaying condensate. If spatial structure is neglected, this dynamics has attractors that are linearly polarized condensates (fixed points), and desynchronized solutions (limit cycles), with a range of bistability. Considering spatial fluctuations about the fixed point, the collective spin modes can either be diffusive, linearly dispersing, or gapped. Including spatial structure, interactions between the spin components can influence the dynamics of vortices; produce stable complexes of vortices and rarefaction pulses with both co- and counter-rotating polarizations; and increase the range of possible limit cycles for the polarization dynamics, with different attractors displaying different spatial structures.
1550-235X
235302
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Keeling, Jonathan
e988426b-e5d6-4cb3-bf49-bb5b97f5b3e0
Berloff, Natalia G.
de2658f8-d78b-4552-ac62-33290762b797
Borgh, Magnus O.
a3c181f8-0535-46cd-bb9a-6e930a81f86e
Keeling, Jonathan
e988426b-e5d6-4cb3-bf49-bb5b97f5b3e0
Berloff, Natalia G.
de2658f8-d78b-4552-ac62-33290762b797

Borgh, Magnus O., Keeling, Jonathan and Berloff, Natalia G. (2010) Spatial pattern formation and polarization dynamics of a nonequilibrium spinor polariton condensate. Physical Review B, 81 (23), 235302. (doi:10.1103/PhysRevB.81.235302).

Record type: Article

Abstract

Quasiparticles in semiconductors—such as microcavity polaritons—can form condensates in which the steady-state density profile is set by the balance of pumping and decay. By taking account of the polarization degree of freedom for a polariton condensate, and considering the effects of an applied magnetic field, we theoretically discuss the interplay between polarization dynamics, and the spatial structure of the pumped decaying condensate. If spatial structure is neglected, this dynamics has attractors that are linearly polarized condensates (fixed points), and desynchronized solutions (limit cycles), with a range of bistability. Considering spatial fluctuations about the fixed point, the collective spin modes can either be diffusive, linearly dispersing, or gapped. Including spatial structure, interactions between the spin components can influence the dynamics of vortices; produce stable complexes of vortices and rarefaction pulses with both co- and counter-rotating polarizations; and increase the range of possible limit cycles for the polarization dynamics, with different attractors displaying different spatial structures.

Other
PhysRevB.81.235302 - Version of Record
Download (1MB)

More information

Published date: 1 June 2010
Organisations: Applied Mathematics

Identifiers

Local EPrints ID: 198739
URI: http://eprints.soton.ac.uk/id/eprint/198739
ISSN: 1550-235X
PURE UUID: 2c458521-1732-469b-a575-c1a7f6004d4b

Catalogue record

Date deposited: 06 Oct 2011 13:41
Last modified: 11 Nov 2019 21:15

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×