We measured, for the first time, two photon radiative cascades due to sequential recombination of quantum dot confined electron hole pairs in the presence of an additional spectator charge carrier. We identified direct, all optical cascades involving spin blockaded intermediate states, and indirect cascades, in which non radiative relaxation precedes the second recombination. Our measurements provide also spin dephasing rates of confined carriers.
|Number of pages||5|
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2010|
|Event||11th International Conference on Optics of Excitons in Confined Systems - Madrid, Spain|
Duration: 7 Sep 2009 → 11 Sep 2009