We discuss various methods of all-optical spin control in semiconductor quantum dots. We present different ways of rotating a single confined electron spin by optical coupling to a trion state. We also discuss a method for controlling the polarization of a confined exciton via a two-photon transition. Finally, we analyze the effect of phonon-induced decoherence on the fidelity of these optical spin control protocols.
@article{arxiv.0706.0276,
title = {Optical control and decoherence of spin qubits in quantum dots},
author = {Pawel Machnikowski and Anna Grodecka and Carsten Weber and Andreas Knorr},
journal= {arXiv preprint arXiv:0706.0276},
year = {2013}
}