Few-particle effects in the optical spectra of semiconductor quantum dots

We analyze few-particle effects in the optical spectra of semiconductor quantum dots using a density-matrix approach that explicitly accounts for exciton-exciton, as well as exciton-carrier interactions. We give a consistent description of additional peaks appearing at high photoexcitation density, and predict that a strong polarization dependence should be characteristic of few-particle features. (C) 1999 Elsevier Science Ltd. All rights reserved.