IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v9y2018i1d10.1038_s41467-018-06386-9.html
   My bibliography  Save this article

Circuit quantum electrodynamics of granular aluminum resonators

Author

Listed:
  • N. Maleeva

    (Karlsruhe Institute of Technology)

  • L. Grünhaupt

    (Karlsruhe Institute of Technology)

  • T. Klein

    (Universite Grenoble Alpes, Institut NEEL
    Institut NEEL)

  • F. Levy-Bertrand

    (Universite Grenoble Alpes, Institut NEEL
    Institut NEEL)

  • O. Dupre

    (Universite Grenoble Alpes, Institut NEEL
    Institut NEEL)

  • M. Calvo

    (Universite Grenoble Alpes, Institut NEEL
    Institut NEEL)

  • F. Valenti

    (Karlsruhe Institute of Technology)

  • P. Winkel

    (Karlsruhe Institute of Technology)

  • F. Friedrich

    (Karlsruhe Institute of Technology)

  • W. Wernsdorfer

    (Karlsruhe Institute of Technology
    Institut NEEL
    Karlsruhe Institute of Technology)

  • A. V. Ustinov

    (Karlsruhe Institute of Technology
    National University of Science and Technology MISIS)

  • H. Rotzinger

    (Karlsruhe Institute of Technology)

  • A. Monfardini

    (Universite Grenoble Alpes, Institut NEEL
    Institut NEEL)

  • M. V. Fistul

    (National University of Science and Technology MISIS
    Institute for Basic Science)

  • I. M. Pop

    (Karlsruhe Institute of Technology
    Karlsruhe Institute of Technology)

Abstract

Granular aluminum (grAl) is a promising high kinetic inductance material for detectors, amplifiers, and qubits. Here we model the grAl structure, consisting of pure aluminum grains separated by thin aluminum oxide barriers, as a network of Josephson junctions, and we calculate the dispersion relation and nonlinearity (self-Kerr and cross-Kerr coefficients). To experimentally study the electrodynamics of grAl thin films, we measure microwave resonators with open-boundary conditions and test the theoretical predictions in two limits. For low frequencies, we use standard microwave reflection measurements in a low-loss environment. The measured low-frequency modes are in agreement with our dispersion relation model, and we observe self-Kerr coefficients within an order of magnitude from our calculation starting from the grAl microstructure. Using a high-frequency setup, we measure the plasma frequency of the film around 70 GHz, in agreement with the analytical prediction.

Suggested Citation

  • N. Maleeva & L. Grünhaupt & T. Klein & F. Levy-Bertrand & O. Dupre & M. Calvo & F. Valenti & P. Winkel & F. Friedrich & W. Wernsdorfer & A. V. Ustinov & H. Rotzinger & A. Monfardini & M. V. Fistul & I, 2018. "Circuit quantum electrodynamics of granular aluminum resonators," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06386-9
    DOI: 10.1038/s41467-018-06386-9
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-018-06386-9
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/s41467-018-06386-9?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Fabian Kaap & Christoph Kissling & Victor Gaydamachenko & Lukas Grünhaupt & Sergey Lotkhov, 2024. "Demonstration of dual Shapiro steps in small Josephson junctions," Nature Communications, Nature, vol. 15(1), pages 1-6, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06386-9. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.