Scalable, pipelined stabilizer measurement scheme and high-fidelity logical operations in a distance-2 surface code

ORAL

Abstract

The ability to perform simultaneous multi-round stabilizer measurements and high-fidelity logical operations are necessary to realize quantum error correction. We present the realization and comparison of high-fidelity fault-tolerant and non-fault tolerant logical operations (initialization, gates and measurement) in Surface-7, the distance-2 surface code, implemented in a superconducting quantum processor. We demonstrate superior performance of the pipelined [Versluis et al., Phys. Rev. Applied 8, 034021, (2017)] implementation of multi-round error detection over the parallel alternative, a key step enabling scalability to larger surface codes.

*Research funded by IARPA (U.S. Army Research Office Grant No. W911NF-16-1-0071) and Intel Corporation.

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Presenters

  • Jorge Marques

    • Delft University of Technology

Authors

  • Jorge Marques

    • Delft University of Technology

  • Miguel S Moreira

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

  • Hany Ali

    • Delft University of Technology

  • Nandini Muthusubramanian

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

  • Wouter Vlothuizen

    • Delft University of Technology
    • TNO

  • Marc Beekman

    • Delft University of Technology

  • Chris Zachariadis

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

  • Nadia Haider

    • Delft University of Technology
    • Netherlands Organization for Scientific Research (TNO)
    • Netherlands Organisation for Applied Scientific Research (TNO)

  • Alessandro Bruno

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

  • Leonardo DiCarlo

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