Theory of relaxation and decoherence of intersublevel transitions in semiconductor quantum dots

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. © 2009 IOP Publishing Ltd.