Exchange-controlled single-electron-spin rotations in quantum dots
介观与纳米尺度物理
2007-05-23 v2
摘要
We show theoretically that arbitrary coherent rotations can be performed quickly (with a gating time ~1 ns) and with high fidelity on the spin of a single confined electron using control of exchange only, without the need for spin-orbit coupling or ac fields. We expect that implementations of this scheme would achieve gate error rates on the order of \eta ~ 10^{-3} in GaAs quantum dots, within reach of several known error-correction protocols
引用
@article{arxiv.cond-mat/0610443,
title = {Exchange-controlled single-electron-spin rotations in quantum dots},
author = {W. A. Coish and Daniel Loss},
journal= {arXiv preprint arXiv:cond-mat/0610443},
year = {2007}
}
备注
4+ pages, 3 figures; v2: Streamlined presentation, final version published in PRB (Rapid Comm.)