The ground state of neutral and negatively charged excitons confined to a single self-assembled InGaAs quantum dot is probed in a direct absorption experiment by high resolution laser spectroscopy. We show how the anisotropic electron-hole exchange interaction depends on the exciton charge and demonstrate how the interaction can be switched on and off with a small dc voltage. Furthermore, we report polarization sensitive analysis of the excitonic interband transition in a single quantum dot as a function of charge with and without magnetic field.
@article{arxiv.cond-mat/0410687,
title = {Voltage-controlled electron-hole interaction in a single quantum dot},
author = {A. Högele and S. Seidl and M. Kroner and K. Karrai and M. Atatüre and J. Dreiser and A. Imamoglu and R. J. Warburton and B. D. Gerardot and P. M. Petroff},
journal= {arXiv preprint arXiv:cond-mat/0410687},
year = {2016}
}
Comments
Conference Proceedings, Physics and Applications of Spin-Related Phenomena in Semiconductors, Santa Barbara (CA), 2004. 4 pages, 4 figures; content as published