Microwave Detection with a Superconducting Kinetic Inductance Amplifier

ORAL

Abstract

Parametric amplifiers constructed from non-linear superconducting microwave resonators have become essential components in circuit quantum electrodynamics experiments. Most parametric amplifiers are driven at powers where they linearly amplify incoming microwave fields, but it is also possible to realize highly non-linear amplifiers by driving with a strong pump [1]. One class of non-linear amplifier is based on parametric self-oscillations induced by strong flux-pumping of a Joesphson parametric amplifier and has and has been used to measure superconducting qubits [2,3]. In this work, we present a new non-linear microwave amplifier based on parametric self-oscillations, whose nonlinearity is engineered instead from kinetic inductance [4]. We characterize the device’s sensitivity using calibrated microwave pulses. We also use it to implement a high-gain latched-readout of spin echo signals from an ensemble of 209Bi that are directly inductively coupled to the device.

 

[1] I. Siddiqi., et. al. RF-driven Josephson bifurcation amplifier for quantum measurement. Phys. Rev. Lett. 93(20):207002 (2004)

[2] Z. Lin., et. al. Josephson parametric phase-locked oscillator and its application to dispersive readout of superconducting qubits. Nature Comm. 5:4480 (2014)

[3] P. Krantz, et. al. Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator. Nature Comm. 7:11417 (2016)

[4] D. J. Parker, et. al. A near-ideal degenerate parametric amplifier. arXiv. 2108.10471 (2021)

*J.J.P. is supported by an Australian Research Council Discovery Early Career Research Award (DE190101397). J.J.P. and A.M. acknowledge support from the Australian Research Council Discovery Program (DP210103769). A.M. is supported by the Australian Department of Industry, Innovation and Science (Grant No. AUS-MURI000002). W.V. acknowledges support from Sydney Quantum Academy. The authors acknowledge support from the NSW Node of the Australian National Fabrication Facility.

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Presenters

  • Wyatt Vine

    • School of Electrical Engineering and Telecommunications, UNSW Sydney

Authors

  • Wyatt Vine

    • School of Electrical Engineering and Telecommunications, UNSW Sydney

  • Anders Kringhoej

    • School of Electrical Engineering and Telecommunications, UNSW Sydney

  • Mykhailo Savytskyi

    • School of Electrical Engineering and Telecommunications, UNSW Sydney

  • Daniel Parker

    • School of Electrical Engineering and Telecommunications, UNSW Sydney

  • Brett C Johnson

    • School of Physics, University of Melbourne
    • University of Melbourne
    • RMIT

  • Jeffrey C McCallum

    • University of Melbourne
    • School of Physics, University of Melbourne

  • Timothy Duty

    • School of Physics, University of New South Wales

  • Andrea Morello

    • School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney NSW 2052, Australia
    • School of Electrical Engineering and Telecommunications, UNSW Sydney
    • University of New South Wales
    • Centre for Quantum Computation and Communication Technology, School of Electrical Engineering and Telecommunications, UNSW Sydney, New South Wales 2052, Australia.

  • Jarryd J Pla

    • School of Electrical Engineering and Telecommunications, UNSW Sydney
    • School of Electrical Engineering and Telecommunications, UNSW Sydney, Sydney, NSW 2052, Australia
    • University of New South Wales