Real time path integrals in studies of quantum dots dynamics: non-monotonous decay rate and reappearance of rabi rotations
Faculty of Sciences. Physics
Singapore :World Scientific
Path Integrals : New Trends and Perspectives, Proceedings
9th International Conference on Path Integrals, SEP 23-28, 2007, Max Planck Inst Phys Comlex Syst, Dresden, Germany
, p. 57-62
University of Antwerp
The dynamics of strongly confined laser driven semiconductor quantum dots coupled to phonons is studied theoretically by calculating the time evolution of the reduced density matrix using the path integral method. We explore the cases of long pulses, strong dot-phonon and dot-laser coupling and high temperatures, which up to now have been inaccessible. We find that the decay rate of the Rabi oscillations is a non-monotonic function of the laser field leading to the decay and reappearance of the Rabi oscillations in the field dependence of the dot exciton population.