Premium
The influence of four‐particle correlations on the parametric polariton amplification
Author(s) -
Savasta Salvatore,
Di Stefano Omar,
Girlanda Raffaello
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200303156
Subject(s) - polariton , exciton , coulomb , physics , electron , condensed matter physics , semiconductor , parametric statistics , biexciton , coupling (piping) , particle (ecology) , field (mathematics) , quantum mechanics , materials science , statistics , mathematics , oceanography , geology , metallurgy , pure mathematics
We present a microscopic theory of parametric polariton amplification in semiconductor microcavities including the influence of exciton–exciton correlations beyond mean‐field. The complexity induced by the Coulomb interaction between electrons determines the noninstantaneous character of exciton–exciton collisions. We find that the observed great enhancement of gain when increasing the polariton splitting origins from the unique interplay of the noninstantaneous nature of exciton–exciton interactions with the strong coupling regime giving rise to polaritons.