High fidelity quantum gates via dynamical decoupling |
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Authors: | West Jacob R Lidar Daniel A Fong Bryan H Gyure Mark F |
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Institution: | HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265, USA. |
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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. |
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