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Progress towards tunable mixed-species laser-free interactions with parametric modulation

ORAL

Abstract

Co-trapping multiple ion species can offer many advantages for quantum information processing, combining the best qualities of each species. However, such mixed-species operation also poses challenges, and the choice of which species can be co-trapped is often limited by their charge-to-mass ratios. If the charge-to-mass ratios of the species are poorly matched, participation in shared motional modes—especially radial modes—can be highly unequal, which slows motionally-mediated multi-qubit interactions. Parametric modulation of the confining potential enables tunable coupling between motional modes [1], which can be used to assist interactions that are impeded by unequal mode participation. We propose using this technique to speed up mixed-species laser-free quantum logic operations by coupling different radial modes in mixed-species ion crystals.

[1] Gorman, D.J. et al., Phys. Rev. A 89, 062332 (2014).

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Publication: Work will likely be incorporated in at least one future paper.

Presenters

  • Hannah M Knaack

    University of Colorado, Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA and Department of Physics, University of Colorado, Boulder, CO 80309, USA

Authors

  • Hannah M Knaack

    University of Colorado, Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA and Department of Physics, University of Colorado, Boulder, CO 80309, USA

  • Alejandra L Collopy

    National Institute of Standards and Tech, National Institute of Standards and Technology, Boulder, CO 80305, USA

  • Laurent Stephenson

    National Institute of Standards and Tech, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA and Department of Physics, University of Colorado, Boulder, CO 80309, USA

  • Andrew C Wilson

    National Institute of Standards and Technology, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA

  • Dietrich Leibfried

    National Institute of Standards and Technology Boulder, National Institute of Standards and Tech, National Institute of Standards and Technology, National Institute of Standards and Technology (NIST) Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA

  • Daniel H Slichter

    National Institute of Standards and Technology, National Institute of Standards and Technology Boulder, National Institute of Standards and Technology, Boulder, CO 80305, USA