The University of Southampton
University of Southampton Institutional Repository

Spontaneous symmetry breaking in a polariton and photon laser

Spontaneous symmetry breaking in a polariton and photon laser
Spontaneous symmetry breaking in a polariton and photon laser
We report on the simultaneous observation of spontaneous symmetry breaking and long-range spatial coherence both in the strong- and the weak-coupling regime in a semiconductor microcavity. Under pulsed excitation, the formation of a stochastic order parameter is observed in polariton and photon lasing regimes. Single-shot measurements of the Stokes vector of the emission exhibit the buildup of stochastic polarization. Below threshold, the polarization noise does not exceed 10%, while above threshold we observe a total polarization of up to 50% after each excitation pulse, while the polarization averaged over the ensemble of pulses remains nearly zero. In both polariton and photon lasing regimes, the stochastic polarization buildup is accompanied by the buildup of spatial coherence. We find that the Landau criterion of spontaneous symmetry breaking and Penrose-Onsager criterion of long-range order for Bose-Einstein condensation are met in both polariton and photon lasing regimes.
0031-9007
Ohadi, H.
08639b57-7cae-498a-afd2-dbfd5d738cd2
Kammann, E.
75670efa-0611-41ef-ae6c-8e3da851c5dc
Liew, T. C. H.
293a2372-69e9-4ca4-b616-c8694c9a3812
Lagoudakis, K. G.
144a5c8b-d1ef-4259-8d72-5b3b9b927b6b
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Lagoudakis, P. G.
ea50c228-f006-4edf-8459-60015d961bbf
Ohadi, H.
08639b57-7cae-498a-afd2-dbfd5d738cd2
Kammann, E.
75670efa-0611-41ef-ae6c-8e3da851c5dc
Liew, T. C. H.
293a2372-69e9-4ca4-b616-c8694c9a3812
Lagoudakis, K. G.
144a5c8b-d1ef-4259-8d72-5b3b9b927b6b
Kavokin, A. V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Lagoudakis, P. G.
ea50c228-f006-4edf-8459-60015d961bbf

Ohadi, H., Kammann, E., Liew, T. C. H., Lagoudakis, K. G., Kavokin, A. V. and Lagoudakis, P. G. (2012) Spontaneous symmetry breaking in a polariton and photon laser. Physical Review Letters, 109 (1), [016404]. (doi:10.1103/PhysRevLett.109.016404).

Record type: Article

Abstract

We report on the simultaneous observation of spontaneous symmetry breaking and long-range spatial coherence both in the strong- and the weak-coupling regime in a semiconductor microcavity. Under pulsed excitation, the formation of a stochastic order parameter is observed in polariton and photon lasing regimes. Single-shot measurements of the Stokes vector of the emission exhibit the buildup of stochastic polarization. Below threshold, the polarization noise does not exceed 10%, while above threshold we observe a total polarization of up to 50% after each excitation pulse, while the polarization averaged over the ensemble of pulses remains nearly zero. In both polariton and photon lasing regimes, the stochastic polarization buildup is accompanied by the buildup of spatial coherence. We find that the Landau criterion of spontaneous symmetry breaking and Penrose-Onsager criterion of long-range order for Bose-Einstein condensation are met in both polariton and photon lasing regimes.

Full text not available from this repository.

More information

Published date: 3 July 2012

Identifiers

Local EPrints ID: 430545
URI: http://eprints.soton.ac.uk/id/eprint/430545
ISSN: 0031-9007
PURE UUID: 23c8e446-932c-4375-818d-5e4921672a88

Catalogue record

Date deposited: 03 May 2019 16:30
Last modified: 03 May 2019 16:30

Export record

Altmetrics

Contributors

Author: H. Ohadi
Author: E. Kammann
Author: T. C. H. Liew
Author: K. G. Lagoudakis
Author: A. V. Kavokin

University divisions

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.

×