title: High fidelity quantum gates via dynamical decoupling.
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.
authors.affiliation: HRL Laboratories, LLC, 3011 Malibu Canyon Road, Malibu, California 90265, USA.
authors.forename: Jacob R
authors.initials: JR
authors.lastname: West
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Lidar
authors.forename: Bryan H
authors.initials: BH
authors.lastname: Fong
authors.forename: Mark F
authors.initials: MF
authors.lastname: Gyure