Magneto-optics of single self-assembled quantum dots

Summary form only given. Quantum dots, often referred to as artificial atoms, open the field of quantum resolved spectroscopy to semiconductor physics. Using near-field microscopy through electron beam written shadow masks, we have isolated single InGaAs quantum dots for advanced spectroscopic analysis. In power-dependent low-temperature photoluminescence studies, we have investigated the influence of few particle interactions on the emission spectra for increasing exciton occupation numbers. Decays from different configurations (up to 4 excitons) lead to the appearance of specifically renormalized emission lines in the region of the s- and p-shell. Contributions from different shells can thereby be assigned by magneto-photoluminescence experiments.