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Band-stop Filters for Protecting Parametric Operations in Superconducting Systems

ORAL

Abstract

Introducing a parametric pump into a system of coupled qubits and a cavity is convenient for performing fast gates [1], dispersive readout [2], or generating entanglement [3]. However, adding a parametric control port can open up the system to noise and dissipation. As a solution, we have designed and tested a custom band-stop filter in order to isolate the quantum system, while still allowing precise parametric control. In this talk, I will discuss our filter design strategy and show experimental results.

[1] X. Y Jin, Shlomi Kotler, Florent Q Lecocq, Katarina Cicak, John Teufel, José Aumentado, Raymond Simmonds, "A versatile parametric coupler between two transmon qubits", Bulletin of the American Physical Society, APS March Meeting 2022, Volume 67, Number 3 (2022). URL: https://meetings.aps.org/Meeting/MAR22/Session/G41.3.

[2] T. Noh, Z. Xiao, K. Cicak, X. Y. Jin, E. Doucet, J. Teufel, J. Aumentado, L. C. G. Govia, L. Ranzani, A. Kamal, and R. W. Simmonds, "Strong parametric dispersive shifts in a statically decoupled multi-qubit cavity QED system" (2021). DOI: 10.48550/ARXIV.2103.09277.

[3] T. Brown, E. Doucet, D. Ristè, G. Ribeill, K. Cicak, J. Aumentado, R. Simmonds, L. Govia, A. Kamal, and L. Ranzani, “Trade off-free entanglement stabilization in a superconducting qutrit-qubit system”, Nature Communications 13, Number: 1 Publisher: Nature Publishing Group, 3994 (2022). DOI: 10.1038/s41467-022-31638-0.

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Presenters

  • Kaixuan Ji

    University of Colorado Boulder, University of Colorado, Boulder

Authors

  • Kaixuan Ji

    University of Colorado Boulder, University of Colorado, Boulder

  • José A Estrada Gonzalez

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

  • Zachary L Parrott

    University of Colorado Boulder, University of Colorado, Boulder

  • Tongyu Zhao

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

  • José Aumentado

    National Institute of Standards and Technology Boulder

  • Raymond W Simmonds

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