Configuration-picture description of quantum-dot carrier scattering for the interaction with LO phonons

A theory of scattering processes between the electronic configurations of a single quantum dot (QD) in interaction with LO phonons is presented. Polaronic renormalizations of the QD carriers are taken into account using a Green's function approach and play an essential role in the calculation of the scattering rates. Moreover, the rates are configuration-dependent, so that additional carriers in the QD, that do not take part in a transition, influence its efficiency. The QD carrier correlations are fully included by using a von Neumann-Lindblad formalism in the configuration basis. Numerical results for scattering rates and QD carrier dynamics are shown to illustrate the theory.