Theory of anisotropic exchange in laterally coupled quantum dots
Mesoscale and Nanoscale Physics
2010-04-12 v2
Abstract
The effects of spin-orbit coupling on the two-electron spectra in lateral coupled quantum dots are investigated analytically and numerically. It is demonstrated that in the absence of magnetic field the exchange interaction is practically unaffected by spin-orbit coupling, for any interdot coupling, boosting prospects for spin-based quantum computing. The anisotropic exchange appears at finite magnetic fields. A numerically accurate effective spin Hamiltonian for modeling spin-orbit-induced two-electron spin dynamics in the presence of magnetic field is proposed.
Keywords
Cite
@article{arxiv.0908.2961,
title = {Theory of anisotropic exchange in laterally coupled quantum dots},
author = {Fabio Baruffa and Peter Stano and Jaroslav Fabian},
journal= {arXiv preprint arXiv:0908.2961},
year = {2010}
}
Comments
4 pages, 3 figures; paper rewritten