Strongly driven Josephson circuits for engineering parametric interactions

ORAL

Abstract

An outstanding roadblock towards the emergence of large scale quantum devices is the finite lifetime of the underlying qubits. One possible solution is to use a subtle interplay between coherent drives and nonlinear dissipation to protect and manipulate quantum information. This nonlinear dissipation is engineered through parametric methods where a strong off-resonant pump mediates a nonlinear interaction between the system of interest and its bath. The efficiency of this protection scales with the drive strength. In real Josephson circuits, this favorable scaling collapses for a critical drive strength. The purpose of this work is to understand this limitation, and design circuits which circumvent this breakdown. We experimentally investigate the behaviour of two circuit topologies in the presence of strong drives, and discuss the implications for strong qubit readout, and engineered parametric interactions.

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Presenters

  • Raphael Lescanne

    ENS Paris

Authors

  • Raphael Lescanne

    ENS Paris

  • Lucas Verney

    INRIA Paris

  • Quentin Ficheux

    Laboratoire Pierre Aigrain, Ecole Normale Supérieure, ENS Lyon

  • Theau Peronnin

    ENS Lyon

  • Michel Devoret

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

  • Benjamin Huard

    ENS de Lyon, ENS Lyon, Laboratoire Pierre Aigrain, Ecole Normale Supérieure

  • Mazyar Mirrahimi

    Applied Physics, Yale Univ, Yale University, Inria and Yale Quantum Institute, Yale Quantum Institute, Yale University, New Haven, CT, United States; INRIA, INRIA Paris, QUANTIC team, INRIA de Paris, 3. INRIA Paris and Yale Quantum Institute

  • Zaki Leghtas

    Mines ParisTech