Precise 2D electric field density simulations for superconducting quantum devices

ORAL

Abstract

Dielectric loss due to two-level systems is a limiting factor for superconducting qubit relaxation times. These losses arise mostly from very thin interfacial defect regions in superconducting devices, making it difficult to accurately simulate the electric field density in these regions with traditional electromagnetic solvers. In this work, we demonstrate a fast boundary integral equation formulation solver that allows the precise simulation of electric field density in these thin regions, showing a significant time improvement over currently available commercial solvers. We compare results to traditional methods and literature, showing good agreement.

*This work is funded by the Materials Characterization and Quantum Performance: Correlation and Causation (MQC) program by the Laboratory for Physical Sciences.This work was conducted with the support of funding through the National Institute of Standards and Technology (NIST). Certain commercial materials and equipment are identified in this paper to foster understanding. Such identification does not imply recommendation or endorsement by NIST, nor does it imply that the materials or equipment identified is necessarily the best available for the purpose.

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Publication: Z. Gimbutas, W.-R. Syong, N. Nguyen, A. Taylor, B. Alpert, D. Bennett, and C.R.H. McRae. Precise 2D electric field density simulations for superconducting quantum devices (in preparation).

Presenters

  • Corey Rae H McRae

    • University of Colorado Boulder
    • University of Colorado, Boulder

Authors

  • Corey Rae H McRae

    • University of Colorado Boulder
    • University of Colorado, Boulder

  • Zydrunas Gimbutas

    • NIST Boulder

  • Wei-Ren Syong

    • University of Colorado, Boulder

  • Nhi Nguyen

    • University of Colorado, Boulder
    • University of Colorado Boulder

  • Bradley Alpert

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

  • Douglas A Bennett

    • National Institute of Standards and Technology (NIST)
    • National Institute of Standards and Technology, Boulder, Colorado 80305, USA
    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology, Boulder

  • Ariana Taylor

    • University of Texas at San Antonio