Journal of Physics Conference Series
Theory of relaxation and decoherence of intersublevel transitions in semiconductor quantum dots
Thomas Grange, R. Ferreira, G. Bastard
Abstract
We present calculations of intersublevel population and phase relaxation in semiconductor quantum dots. Anharmonic polaron decay is shown to be responsible for population relaxation over a large spectral range. Additional pure dephasing processes are caused by acoustic phonons, which cause the appearance of peaked sidebands and induce broadening through real and virtual transitions between the excited states.