Realizing the theoretical promise of quantum computers will require overcoming decoherence. Here we demonstrate numerically that high fidelity quantum gates are possible within a framework of quantum dynamical decoupling. Orders of magnitude improvement in the fidelities of a universal set of quantum gates, relative to unprotected evolution, is achieved over a broad range of system-environment coupling strengths, using recursively constructed (concatenated) dynamical decoupling pulse sequences.
@article{arxiv.1012.3433,
title = {High fidelity quantum gates via dynamical decoupling},
author = {Jacob R. West and Daniel A. Lidar and Bryan H. Fong and Mark F. Gyure},
journal= {arXiv preprint arXiv:1012.3433},
year = {2010}
}
Comments
Slightly expanded form of the journal version. Also includes the supplementary material as an appendix