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A gate-tunable, field-compatible fluxonium

ORAL

Abstract

Hybrid superconducting circuits, which integrate non-superconducting elements into a circuit quantum electrodynamics (cQED) architecture, expand the possible applications of cQED and provide new insights into mesoscopic superconductivity. Extending the capabilities of hybrid flux-based circuits, which provide access to current-phase relations, to work in magnetic fields would be especially useful both as a probe of spin-polarized Andreev bound states and as a platform for topological qubits. Here, we build upon previous results on a magnetic-field compatible fluxonium with an electrostatically-tuned semiconducting nanowire as its non-linear element. We use our nanowire fluxonium as a sensitive probe to study phase slips in highly transparent Josephson junctions.

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Presenters

  • Marta Pita-Vidal

    QuTech, Delft University of Technology

Authors

  • Marta Pita-Vidal

    QuTech, Delft University of Technology

  • Arno Bargerbos

    Delft University of Technology, QuTech, Delft University of Technology, Qutech, Delft University of Technology

  • Tereza Vakhtel

    Leiden University

  • Chung-Kai Yang

    Quantum Lab Delft, Microsoft

  • David J. Van Woerkom

    Quantum Lab Delft, Microsoft, Quantum lab Delft, Microsoft

  • Wolfgang Pfaff

    University of Illinois at Urbana-Champaign, Department of Physics, University of Illinois Urbana-Champaign, University of Illinois Urbana-Champaign

  • Nadia Haider

    Delft University of Technology, Netherlands Organization for Scientific Research (TNO), Netherlands Organisation for Applied Scientific Research (TNO)

  • Peter Krogstrup

    Center for Quantum Devices and Microsoft Quantum Lab Copenhagen, Niels Bohr Institute, University of Copenhagen, Microsoft Quantum Materials Lab and Center for Quantum Devices, Niels Bohr Institute,8University of Copenhagen, Kanalvej 7, 2800 Kongens Lyngby, Denmark, Niels Bohr Institute, University of Copenhagen, Quantum Materials Lab Copenhagen, Microsoft, University of Copenhagen, Center for Quantum Devices and Microsoft Quantum Lab Copenhagen, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark, Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, Microsoft Quantum Materials Lab, University of Copenhagen, Niels Bohr Institute, Copenhagen, Niels Bohr Institute

  • Leo Kouwenhoven

    Microsoft station Q Delft, Microsoft Station Q Delft, Quantum Lab Delft, Microsoft, Microsoft Quantum Lab Delft, Quantum lab Delft, Microsoft, Microsoft Corp, Station Q Delft, Microsoft

  • Gijs De Lange

    Quantum Lab Delft, Microsoft, Quantum lab Delft, Microsoft, Microsoft Corp

  • Bernard Van Heck

    Quantum Lab Delft, Microsoft, Microsoft, Quantum lab Delft, Microsoft, Microsoft Quantum Lab Delft, Delft University of Technology, 2600 GA Delft, The Netherlands

  • Angela Kou

    Illinois Quantum Information Science and Technology Center, University of Illinois at Urbana-Champaign, University of Illinois at Urbana-Champaign