Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots
Mesoscale and Nanoscale Physics
2009-04-27 v2 Quantum Physics
Abstract
We demonstrate that an optically driven spin of a carrier in a quantum dot undergoes indirect dephasing via conditional optically induced charge evolution even in the absence of any direct interaction between the spin and its environment. A generic model for the indirect dephasing with a three-component system with spin, charge, and reservoir is proposed. This indirect decoherence channel is studied for the optical spin manipulation in a quantum dot with a microscopic description of the charge-phonon interaction taking into account its non-Markovian nature.
Cite
@article{arxiv.0811.2108,
title = {Indirect spin dephasing via charge state decoherence in optical control schemes in quantum dots},
author = {A. Grodecka and P. Machnikowski and J. Förstner},
journal= {arXiv preprint arXiv:0811.2108},
year = {2009}
}
Comments
Final extended version, 6 pages, 2 new figures