Intrinsically Error Protected Superconducting Architecture Based on Superinductance

ORAL

Abstract

Significant effort has been recently devoted to develop qubits with hardware-level protection, where the disjoint nature of the qubit wavefunctions offers protection against various relaxation mechanisms. Among the superconducting architectures, the so-called 0-π qubit [PRA 87, 052306 (2013)] is a promising candidate for realizing such a system. Here, we introduce the soft-0-π qubit: a twist on the original 0-π qubit proposal that relaxes some of the constraints on the qubit design parameters. In this talk, we present spectroscopic and time-domain measurements on this device. Our approach exploits an exponentially small overlap between the qubit logical wave functions and flux sweet spots to render the soft-0-π qubit noise-protected.

*
Army Research Office Grant W911NF-15-1-0421

–

Presenters

  • Andras Gyenis

    • Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton University

Authors

  • Andras Gyenis

    • Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton University

  • Thomas Hazard

    • Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton University

  • Agustin Di Paolo

    • Institut Quantique and Département de Physique, Université de Sherbrooke
    • Universite de Sherbrooke
    • Institut Quantique and Département de Physique, Université de Sherbrooke, Sherbrooke, QC, Canada, J1K 2R1

  • Andrei Vrajitoarea

    • Department of Electrical Engineering, Princeton University
    • Princeton University

  • Alexandre Blais

    • Institut Quantique and Département de Physique, Université de Sherbrooke
    • Université de Sherbrooke
    • Universite de Sherbrooke
    • Université de Sherbrooke, Institut quantique and Département de Physique
    • Univ. of Sherbrooke
    • Institut Quantique and Département de Physique, Université de Sherbrooke, Sherbrooke, QC, Canada, J1K 2R1

  • Jens Koch

    • Department of Physics and Astronomy, Northwestern University
    • Northwestern University
    • Northwestern Univeristy

  • Andrew Houck

    • Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton University