High fidelity quantum gates via dynamical decoupling
arXiv:1012.3433 · doi:10.1103/PhysRevLett.105.230503
Abstract
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.
Slightly expanded form of the journal version. Also includes the supplementary material as an appendix
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