A fluxonium-based artificial molecule with a tunable magnetic moment

ORAL

Abstract

We have designed and measured an engineered artificial molecule, composed of two strongly coupled fluxonium atoms, which possesses a tunable magnetic moment. An externally applied magnetic flux tunes the molecule between two regimes: one in which the ground-excited state manifold has a magnetic dipole moment and one in which the ground-excited state manifold has only a magnetic quadrupole moment. By varying the applied external flux, we find the coherence of the molecule to be limited by local flux noise.

*Work supported by: ARO, ONR, NSF, AFOSR, and YINQE

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Authors

  • A. Kou

    • Department of Applied Physics, Yale University

  • W.C. Smith

    • Department of Applied Physics, Yale University

  • U. Vool

    • Department of Applied Physics, Yale University

  • R.T. Brierley

    • Department of Applied Physics, Yale University

  • H. Meier

    • Department of Applied Physics, Yale University

  • L. Frunzio

    • Department of Applied Physics, Yale University

  • S.M. Girvin

    • Department of Applied Physics, Yale University

  • L.I. Glazman

    • Department of Applied Physics, Yale University

  • M.H. Devoret

    • Department of Applied Physics, Yale University