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.

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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