Quickly Tunable Electromagnetic Environment for Superconducting Quantum Circuits

ORAL

Abstract

In the qubits operation it is of utmost importance to be able to quickly remove any unwanted excitations on demand for fast and accurate initialization. We recently introduced a device referred to as a quantum-circuit refrigerator (QCR) [1]. It is a stand-alone component that can readily be integrated into superconducting quantum electric devices, with negligible perturbation to the device operation. In our experiments, we demonstrate the ability to tune the dissipation of a superconducting resonator by orders of magnitude by the convenient application of a bias voltage on the QCR. The switching time of the tunable dissipation can be as low as a few nanoseconds. We also observe a tunable Lamb shift owing to the dissipation induced by the QCR.
1 K. Y. Tan et al., Nat. Commun. 8, 15189 (2017)

*This research was financially supported by European Research Council and MSCA Grant; by Academy of Finland under its Centres of Excellence Program and grants; Finnish Cultural Foundation, the Jane and Aatos Erkko Foundation, Vilho, Yrjo and Kalle Vaisala Foundation, and the Technology Industries of Finland Centennial Foundation. We thank the provision of facilities and technical support by Aalto University at OtaNano – Micronova Nanofabrication Centre.

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Presenters

  • Vasilii Sevriuk

    • QCD Labs, Aalto University

Authors

  • Vasilii Sevriuk

    • QCD Labs, Aalto University

  • Kuan Yen Tan

    • QCD Labs, Aalto University

  • Matti Silveri

    • University of Oulu
    • Department of Physics, University of Oulu
    • QCD Labs, Aalto University
    • Research Unit of Nano and Molecular Systems, University of Oulu

  • Shumpei Masuda

    • QCD Labs, Aalto University

  • Jan Goetz

    • QCD Labs, Aalto University

  • Matti Partanen

    • QCD Labs, Aalto University

  • Dibyendu Hazra

    • University of Aalto
    • QCD Labs, Aalto University

  • Joonas Govenius

    • QCD Labs, Aalto University
    • Aalto University

  • Russell Lake

    • National Institute of Standards and Technology (NIST), Boulder
    • Boulder, NIST
    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology, Boulder

  • Visa I Vesterinen

    • QCD Labs, Aalto University
    • VTT Technical Research Centre of Finland
    • Technical Research Centre of Finland Ltd, VTT

  • Leif Grönberg

    • QTF Centre of Excellence, VTT Technical Research Centre of Finland
    • VTT Technical Research Centre of Finland
    • Technical Research Centre of Finland Ltd, VTT

  • Juha Hassel

    • QTF Centre of Excellence, VTT Technical Research Centre of Finland
    • VTT Technical Research Centre of Finland
    • Technical Research Centre of Finland Ltd, VTT

  • Slawomir Simbierowicz

    • QTF Centre of Excellence, VTT Technical Research Centre of Finland
    • VTT Technical Research Centre of Finland
    • Technical Research Centre of Finland Ltd, VTT

  • Marton Gunyho

    • Aalto University

  • Aarne Keränen

    • QCD Labs, Aalto University
    • Aalto University

  • Jani Tuorila

    • Aalto University

  • Tapio Ala-Nissila

    • Departments of Mathematical Sciences and Physics, Loughborough University
    • Applied Physics & Mathematical Sciences, Aalto and Loughborough University

  • Hermann Grabert

    • Department of Physics, University of Freiburg

  • Mikko Möttönen

    • QCD Labs, Aalto University