Quantum Circuits Using the Disordered Superconductor WSi (Part III)

ORAL

Abstract

In part three of this three-part talk, we focus on circuit quantization of a RF-squid circuit which using a weak-link WSi junction instead of a conventional AlOx tunnel junction. We demonstrate that experimental data cannot be modeled based on a simple sinusoidal current-phase relation, but is consistent with a sawtooth-like current-phase relationship. Results from both semi-classical and quantum calculations exhibit detailed agreement with experimental one-tone spectroscopic data.

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Presenters

  • Sai Pavan Chitta

    Northwestern University

Authors

  • Sai Pavan Chitta

    Northwestern University

  • Trevyn Larson

    National Institute of Standards and Technology, Boulder

  • Sarah Garcia Jones

    University of Colorado Boulder

  • Heli Vora

    National Institute of Standards and Technology Boulder

  • Sae Woo Nam

    University of Colorado Boulder, National Institute of Standards and Technology, Boulder

  • Raymond W Simmonds

    National Institute of Standards and Technology, Boulder

  • Andras Gyenis

    CU Boulder, University of Colorado Boulder, University of Colorado, Boulder

  • Jens Koch

    Northwestern University