We review a number of recent experiments which are probing ground state and excitations of few-electron systems in self-assembled InAs quantum dots. Far-infrared spectroscopy, together with local as well as large-scale capacitive probing allows for a detailed investigation of the different contributions to the many-particle spectrum in the dots. The influence of electron--electron interactions on the ground state and the excitations is discussed.
@article{arxiv.cond-mat/9609266,
title = {Far-infrared and capacitance spectroscopy of self-assembled InAs quantum dots},
author = {A. Lorke and M. Fricke and B. T. Miller and M. Haslinger and J. P. Kotthaus and G. Medeiros-Ribeiro and P. M. Petroff},
journal= {arXiv preprint arXiv:cond-mat/9609266},
year = {2007}
}