Integrating Flux Tunability in Superconducting 3D cQED Devices

ORAL

Abstract

Circuit quantum electrodynamics (cQED) experiments have demonstrated excellent quantum control and coherence in both planar and 3D architectures. Long coherence times in cQED architectures have been achieved by enclosing on-chip Josephson junction-based circuit elements in protective superconducting cavities. Superconducting cavities provide an electromagnetic shield for coherent elements, as well as functioning as highly coherent memories themselves. Flux tunability is routinely used as an experimental tool in planar devices and in normal metal 3D cavities. However, the same superconducting shield that protects coherent circuit elements has made it difficult to implement flux tunability, due to the Meissner effect. In this work, we implement DC flux tunability in a superconducting coaxial transmission line architecture, while still retaining a high Q factor. We present an outlook for integrating this architecture with future 3D cQED experiments.

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Presenters

  • Parker Henry

    Physics and Applied Physics, Yale University

Authors

  • Parker Henry

    Physics and Applied Physics, Yale University

  • Luke Burkhart

    Applied Physics, Yale University, Physics and Applied Physics, Yale University, Department of Applied Physics, Yale Univ, Yale University, Dept. of Applied Physics, Yale University, Departments of Applied Physics and Physics, Yale University

  • Wolfgang Pfaff

    Applied Physics, Yale University, Physics and Applied Physics, Yale University, Department of Applied Physics, Yale Univ

  • Christopher Axline

    Applied Physics, Yale University, Physics and Applied Physics, Yale University, Dept. of Applied Physics, Yale University, Departments of Applied Physics and Physics, Yale University

  • Nicholas Frattini

    Applied Physics, Yale University, Physics and Applied Physics, Yale University

  • Kevin Chou

    Applied Physics, Yale University, Physics and Applied Physics, Yale University, Dept. of Applied Physics, Yale University, Yale University, Yale Univ

  • Jacob Blumoff

    Physics and Applied Physics, Yale University, HRL Laboratories

  • Luigi Frunzio

    Yale University, Applied Physics, Yale University, Physics and Applied Physics, Yale University, Applied Physics, Yale Univ, Dept. of Applied Physics, Yale University, Department of Applied Physics, Yale Univ, Yale Univ, Departments of Applied Physics and Physics, Yale University

  • Michel Devoret

    Yale University, Applied Physics, Yale University, Department of Applied Physics, Yale University, Applied Physics, Yale Univ, Physics and Applied Physics, Yale University, Yale Univ, Dept. of Applied Physics, Yale University, Department of Applied Physics, Yale Univ

  • Robert Schoelkopf

    Yale University, Applied Physics, Yale University, Physics and Applied Physics, Yale University, Applied Physics, Yale Univ, Dept. of Applied Physics, Yale University, Departments of Applied Physics and Physics, Yale University