Recent experimental developments in the field of semiconductor quantum dot spectroscopy will be discussed. First we report about single quantum dot exciton two-level systems and their coherent properties in terms of single qubit manipulations. In the second part we report on coherent quantum coupling in a prototype "two-qubit" system consisting of a vertically stacked pair of quantum dots. The interaction can be tuned in such quantum dot molecule devices using an applied voltage as external parameter.
@article{arxiv.cond-mat/0505731,
title = {Recent advances in exciton based quantum information processing in quantum dot nanostructures},
author = {H. J. Krenner and S. Stufler and M. Sabathil and E. C. Clark and P. Ester and M. Bichler and G. Abstreiter and J. J. Finley and A. Zrenner},
journal= {arXiv preprint arXiv:cond-mat/0505731},
year = {2007}
}
Comments
37 pages, 15 figures, submitted to New Journal of Physics, focus issue on Solid State Quantum Information, added references