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Exchange-controlled single-electron-spin rotations in quantum dots

W. A. Coish·Daniel Loss
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Abstract

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 η~ 10^{-3} in GaAs quantum dots, within reach of several known error-correction protocols

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W. A. Coish, Daniel Loss. 2007-04-23. Exchange-controlled single-electron-spin rotations in quantum dots. https://doi.org/10.1103/physrevb.75.161302

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