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Coherence dynamics in microcavities and polariton lasers

Coherence dynamics in microcavities and polariton lasers
Coherence dynamics in microcavities and polariton lasers
We study theoretically the second-order coherence g(2)(0) of light emitted by polariton lasers, i.e., devices based on stimulated relaxation and condensation of exciton–polaritons in microcavities. We solve kinetic equations for the polaritons in different approximations and show that (i) the coherence introduced into the polariton condensate by an external source can be conserved by the system over a macroscopically long time, and (ii) if the total number of polaritons is fixed by the excitation conditions, the correlations between the populations of the ground and excited polariton states can also result in the spontaneous buildup of second-order coherence in the polariton condensate. Both results are obtained neglecting polariton–polariton interactions in the condensate.
0953-8984
S3665-S3681
Laussy, F.P.
1ed745d2-e84d-4457-81d2-5568c5c9c753
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Bigenwald, P.
92c2e4b5-1fc5-42f0-bd5d-a08bd24061c6
Laussy, F.P.
1ed745d2-e84d-4457-81d2-5568c5c9c753
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Bigenwald, P.
92c2e4b5-1fc5-42f0-bd5d-a08bd24061c6

Laussy, F.P., Malpuech, G., Kavokin, A.V. and Bigenwald, P. (2004) Coherence dynamics in microcavities and polariton lasers. Journal of Physics: Condensed Matter, 16 (35), S3665-S3681. (doi:10.1088/0953-8984/16/35/008).

Record type: Article

Abstract

We study theoretically the second-order coherence g(2)(0) of light emitted by polariton lasers, i.e., devices based on stimulated relaxation and condensation of exciton–polaritons in microcavities. We solve kinetic equations for the polaritons in different approximations and show that (i) the coherence introduced into the polariton condensate by an external source can be conserved by the system over a macroscopically long time, and (ii) if the total number of polaritons is fixed by the excitation conditions, the correlations between the populations of the ground and excited polariton states can also result in the spontaneous buildup of second-order coherence in the polariton condensate. Both results are obtained neglecting polariton–polariton interactions in the condensate.

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Published date: 20 August 2004

Identifiers

Local EPrints ID: 57417
URI: http://eprints.soton.ac.uk/id/eprint/57417
ISSN: 0953-8984
PURE UUID: 5a1fd91f-2b5c-430e-9cf0-bcf92fe60355

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Date deposited: 13 Aug 2008
Last modified: 09 Nov 2021 09:53

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Contributors

Author: F.P. Laussy
Author: G. Malpuech
Author: A.V. Kavokin
Author: P. Bigenwald

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