Charge-parity dynamics in offset-charge-sensitive transmons: Part 1

ORAL

Abstract

Understanding and mitigating the effects of nonequilibrium quasiparticle excitations is an important step towards improving the performance of superconducting qubits. By designing transmon qubits in the offset-charge-sensitive regime, one can achieve direct dispersive detection of quasiparticle tunneling events. We utilize these devices to measure quasiparticle tunneling rates as a function of various experimental parameters such as RF filtering and qubit design. This talk will focus on experimental methods.

–

Presenters

  • Spencer Diamond

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

Authors

  • Spencer Diamond

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

  • Kyle Serniak

    Applied Physics, Yale University, Yale Univ, Department of Applied Physics, Yale University

  • Max Hays

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

  • Valla Fatemi

    Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology, Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

  • Gijs De Lange

    Microsoft Quantum Delft, Yale Univ, Station Q Delft, Microsoft, Microsoft Station Q Delft, Delft University of Technology

  • Shyam Shankar

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University

  • Luigi Frunzio

    Applied Physics, Yale University, Yale Univ, Yale University

  • Robert J Schoelkopf

    Yale Univ, Yale University, Department of Applied Physics and Physics, Yale University, Applied Physics, Yale University

  • Leonid Glazman

    Physics, Yale University, Departments of Physics and Applied Physics, Yale University, Yale University, Yale Univ

  • Manuel Houzet

    Univ. Grenoble Alpes, CEA, INAC-Pheliqs, Grenoble, France, CEA Grenoble

  • Michel H. Devoret

    Yale Univ, Applied Physics, Yale University, Department of Applied Physics, Yale University, Department of Applied Physics, Yale University, New Haven, Connecticut 06511, USA