Fast RF-only tuneup of quantum dot systems using multiplexed GHz CPW resonators

ORAL

Abstract

Radio-Frequency (RF) sensing is a fast and scalable tool for measuring mesoscopic semiconductor and hybrid devices. We implement a combination of capacitively and galvanically coupled Co-Planar Waveguide (CPW) resonators in a multi-quantum-dot InAs nanowire device and characterize it without the aid of DC measurement. Notably, we extract high frequency conductance without calibration from DC data. Furthermore, we demonstrate multiplexed measurement of a charge stability diagram using this resonator and resonators capacitively coupled to two dots. These resonators are optimized for visibility of dispersive shifts imparted by electron charge transitions, leading to signal-to-noise ratios exceeding 10 for 1 microsecond integration times.

*The authors acknowledge funding from the Delft University of Technology and Microsoft.

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Presenters

  • Christian Prosko

    • Delft University of Technology
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech, Delft University of Technology

Authors

  • Christian Prosko

    • Delft University of Technology
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech, Delft University of Technology

  • Damaz De Jong

    • Delft University of Technology
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech, Delft University of Technology

  • Daan Waardenburg

    • Delft University of Technology
    • QuTech and Kavli Institute for Nanoscience, Delft University of Technology

  • Lin Han

    • Delft University of Technology
    • Drexel University, School of biomedical Engineering
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech, Delft University of Technology

  • Filip Malinowski

    • Delft University of Technology
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • QuTech, Delft University of Technology

  • Nejc Blaznik

    • Delft University of Technology

  • 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

  • Jonne Koski

    • Microsoft Quantum Lab Delft

  • Leo Kouwenhoven

    • Microsoft Quantum Lab Delft, Delft University of Technology
    • Delft University of Technology
    • Quantum Labs Delft, Microsoft
    • Microsoft Quantum Lab Delft
    • Quantum Lab Delft, Microsoft
    • Microsoft Corp

  • Wolfgang Pfaff

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