%0 Journal Article
%T Superradiance and enhanced luminescence from ensembles of a few self-assembled quantum dots
%A Wildan Abdussalam
%A Pawe£¿ Machnikowski
%J Physics
%D 2014
%I arXiv
%R 10.1103/PhysRevB.90.125307
%X We study the evolution of photoluminescence (PL) from homogeneous and inhomogeneous ensembles of a few coupled QDs. We discuss the relation between signals from a given QD ensemble under strong and weak excitation (full inversion and linear response regimes): A system homogeneous enough to manifest superradiant emission when strongly inverted shows a non-exponential decay of the PL signal under spatially coherent weak excitation. In an inhomogeneous ensemble the PL decay is always nearly exponential with a qualitatively different form of the time dependence in the two excitation regimes and with a higher rate under weak excitation.
%U http://arxiv.org/abs/1406.3685v2