Driving superconducting qubits into chaos

ORAL

Abstract

Kerr parametric oscillators can operate as Kerr-cat qubits, which offer advantages towards the encoding and manipulation of error-protected quantum information. Recently, they have been implemented with the SNAIL transmon superconducting circuit, which combines Kerr nonlinearity and a squeezing drive. In this presentation, we show that when the nonlinearities and the drive are strong, the qubit melts away due to the onset of chaos. By exploring various ranges of experimentally accessible parameters, we provide an equation for the crossing line between regularity and chaos. If on the one hand chaos puts limits on the Kerr-cat qubit, on the other hand it opens up a new direction of research for superconducting circuits.

*This research was supported by the NSF CCI grant (Award Number 2124511).

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Publication: Chávez-Carlos, J., Lezama, T.L.M., Cortiñas, R.G. et al. Spectral kissing and its dynamical consequences in the squeeze-driven Kerr oscillator. npj Quantum Inf 9, 76 (2023). https://doi.org/10.1038/s41534-023-00745-1

Presenters

  • Jorge Chavez

    • University of Connecticut

Authors

  • Jorge Chavez

    • University of Connecticut

  • Rodrigo G Cortinas

    • Yale University

  • Miguel A Prado

    • University of Connecticut

  • Ignacio García-Mata

    • Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata
    • Universidad Nacional de Mar del Plata

  • Victor S Batista

    • Department of Chemistry, Yale University
    • Yale University

  • Francisco Pérez-Bernal

    • Departamento de Ciencias Integradas y Centro de Estudios Avanzados en Física, Matemáticas y Computación, Universidad de Huelva
    • Universidad de Huelva

  • Diego A Wisniacki

    • Departamento de Física "J. J. Giambiagi" and IFIBA, FCEyN, Universidad de Buenos Aires
    • Universidad de Buenos Aires

  • Lea F Santos

    • Department of Physics, University of Connecticut
    • University of Connecticut