Messanae Universitas Studiorum

Many-Body and Correlation Effects on Parametric Polariton Amplification in Semiconductor Microcavities

Savasta, Salvatore and Di Stefano, Omar and Girlanda, Raffaello (2003) Many-Body and Correlation Effects on Parametric Polariton Amplification in Semiconductor Microcavities. Physical Review Letters, 90 (9). pp. 1-4. ISSN 0031-9007

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Abstract

The complexity induced by the Coulomb interaction between electrons determines the noninstantaneous character of exciton-exciton collisions. We show that the exciton-photon coupling in semiconductor microcavities is able to alter the exciton dynamics during collisions strongly affecting the effective scattering rates. Our analysis clarifies the origin of the great enhancement of parametric gain observed when increasing the polariton splitting. It also demonstrates that exciton-exciton collisions in semiconductors can be controlled and engineered to produce almost decoherence-free collisions for the realization of all-optical microscopic devices.

Item Type: Article
Subjects: M.U.S. - Contributi Scientifici > 02 - Scienze fisiche
Depositing User: Stage ICCU
Date Deposited: 31 May 2005
Last Modified: 13 Apr 2010 11:20
URI: http://cab.unime.it/mus/id/eprint/322

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