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Drift and diffusion of exciton-polaritons in a graded quantum microcavity

Drift and diffusion of exciton-polaritons in a graded quantum microcavity
Drift and diffusion of exciton-polaritons in a graded quantum microcavity
We report an experimental evidence of the acceleration of exciton-polaritons propagating in-plane of a semiconductor microcavity in the regime of the ballistic transport. The acceleration is achieved due to the gradient of the thickness of the cavity and results from the reciprocal space filtering effect of the cavity. The wave packet propagating in the cavity plane is constantly filtered by the cavity eigenmode that shifts towards larger wave vectors as the cavity width increases. The theory based on the extended scattering state technique reproduces the polariton transport in a graded cavity with a good accuracy.
71.36.+c, 73.23.Ad
0031-8965
23-27
Sermage, B.
6709441a-07a2-441d-8855-42064f759d66
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Thierry-Mieg, V.
18c194f2-451f-402c-b1d0-94e0bfa0f8aa
Sermage, B.
6709441a-07a2-441d-8855-42064f759d66
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Thierry-Mieg, V.
18c194f2-451f-402c-b1d0-94e0bfa0f8aa

Sermage, B., Malpuech, G., Kavokin, A.V. and Thierry-Mieg, V. (2001) Drift and diffusion of exciton-polaritons in a graded quantum microcavity. Physica Status Solidi A-Applied Research, 183 (1), 23-27. (doi:10.1002/1521-396X(200101)183:1<23::AID-PSSA23>3.0.CO;2-N).

Record type: Article

Abstract

We report an experimental evidence of the acceleration of exciton-polaritons propagating in-plane of a semiconductor microcavity in the regime of the ballistic transport. The acceleration is achieved due to the gradient of the thickness of the cavity and results from the reciprocal space filtering effect of the cavity. The wave packet propagating in the cavity plane is constantly filtered by the cavity eigenmode that shifts towards larger wave vectors as the cavity width increases. The theory based on the extended scattering state technique reproduces the polariton transport in a graded cavity with a good accuracy.

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More information

Submitted date: 8 October 2000
Published date: 2001
Keywords: 71.36.+c, 73.23.Ad

Identifiers

Local EPrints ID: 57587
URI: http://eprints.soton.ac.uk/id/eprint/57587
ISSN: 0031-8965
PURE UUID: ae3006e6-2bb0-4928-b9cb-26f58df58b06

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Date deposited: 14 Aug 2008
Last modified: 09 Nov 2021 09:53

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Contributors

Author: B. Sermage
Author: G. Malpuech
Author: A.V. Kavokin
Author: V. Thierry-Mieg

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