The influence of two‐exciton correlations on the dynamics of parametric polariton amplification | Zendy

Di Stefano Omar | Zendy; Savasta Salvatore | Zendy; Girlanda Raffaello | Zendy

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The influence of two‐exciton correlations on the dynamics of parametric polariton amplification

Author(s) -

Di Stefano Omar,

Savasta Salvatore,

Girlanda Raffaello

Publication year - 2004

Publication title -

physica status solidi (c)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.21

H-Index - 46

eISSN - 1610-1642

pISSN - 1610-1634

DOI - 10.1002/pssc.200304019

Subject(s) - polariton , exciton , physics , quantum decoherence , condensed matter physics , nonlinear system , parametric statistics , dephasing , semiconductor , absorption (acoustics) , quantum mechanics , quantum , optics , mathematics , statistics

We present an overview of our results concerning the influence of two‐pair continuum coherences on the transient nonlinear optical response of semiconductor microcavities. We show that the interplay between these 4‐particle coherences and the nonperturbative light‐matter interaction produces highly desirable almost decoherence‐free exciton‐exciton collisions on the lower polariton branch. This effect gives rise to the very different nonlinear absorption rates on the two polariton branches observed in many experiments and make possible to reach a very‐high degree of amplification in samples with large Rabi splitting. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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