Abstract
We show theoretically that arbitrary coherent rotations can be performed quickly (with a gating time ) 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 in GaAs quantum dots, within reach of several known error-correction protocols.
- Received 23 March 2007
DOI:https://doi.org/10.1103/PhysRevB.75.161302
©2007 American Physical Society