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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.

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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