Optimizing quantum error correction experiments with flux-tunable transmonsPart 1: experiment

ORAL

Abstract

This two-part series presents the optimization of quantum error correction (QEC) experiments on a superconducting quantum processor with 17 flux-tunable transmons. A key experimental obstacle is the presence of two-level systems (TLSs), which can severely compromise the operational fidelities of one- and two-qubit gates as well as readout. In this first part, we implement various calibration strategies to mitigate the impact of TLSs on these building blocks of QEC cycles. We next calibrate and benchmark stabilizer measurements and link physical errors to the temporal and spatial correlation of error detection events. Finally, we show gradual improvement in logical-level fidelity obtained using the progression of error decoders presented in part two.

* Research funded by IARPA (U.S. A.R.O. Grant No. W911NF-16-1-0071) Intel Corporation, the Dutch Ministry of Economic Affairs, and the European Flagship (OpenSuperQPlus).

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Publication: manuscripts is in preparation.

Presenters

  • Hany Ali

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

Authors

  • Hany Ali

    Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Jorge F Marques

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft University of Technology, QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Sean van der Meer

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Yuejie Xin

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Matvey Finkel

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Martijn Veen

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, The Netherlands

  • Marc Beekman

    QuTech and Netherlands Organisation for Applied Scientific Research, The Netherlands

  • Wouter Vlothuizen

    Qblox BV, Qblox co., Qblox bv

  • Nadia Haider

    Netherlands Org Scientific Res

  • Leonardo DiCarlo

    QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft University of Technology