Intel Superconducting Qubits, Part 1: Performance improvements towards enabling quantum applications

ORAL

Abstract

Quantum processors based on superconducting materials with flux-tunable transmon qubits present many challenges, including minimizing flux and microwave crosstalk, improving qubit frequency targeting, extending coherence times, and ultimately maximizing gate fidelities. Here we present our fabrication capabilities addressing some of these challenges on die sizes ranging from small laterally wirebonded 2-qubit chips to larger flip-chip, ball-grid-array-bonded 7- and 17-qubit chips. Through improved die processing, including better-controlled materials interfaces, integration of air bridges, and Josephson Junction fabrication optimization, we demonstrate low flux and microwave crosstalk and qubit performance improvements resulting in one- and two-qubit gate fidelities that enable algorithm exploration and execution.

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Presenters

  • Roman Caudillo

    • Components Research, Intel
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA

Authors

  • Roman Caudillo

    • Components Research, Intel
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA

  • David Michalak

    • Components Research, Intel
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA

  • Lester Lampert

    • Components Research, Intel
    • Components Research, Intel Corporation
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA

  • Adel A Elsherbini

    • Components Research, Intel
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA

  • Javier A Falcon

    • DATD, Intel

  • Ye Seul Ashley Nam

    • DATD, Intel

  • Preston T Myers

    • DATD, Intel

  • Sonika Johri

    • Intel Labs, Intel
    • Intel

  • Xiang Chris Zou

    • Intel Labs, Intel

  • Jeanette Marie Roberts

    • Components Research, Intel
    • Components Research, Intel Corporation

  • Alessandro Bruno

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

  • Nandini Muthusubramanian

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

  • Cornelis Christiaan Bultink

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

  • Filip Malinowski

    • Delft University of Technology
    • University of Copenhagen
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology
    • Center for Quantum Devices, Niels Bohr Institute
    • QuTech and Kavli Institute of Nanoscience, Delft University of Technology, Delft, The Netherlands

  • Nadia Haider

    • QuTech and TNO
    • QuTech and Netherlands Organisation for Scientific Research (TNO), Delft, The Netherlands

  • Leonardo DiCarlo

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

  • Jim Clarke

    • Components Research, Intel
    • Components Research, Intel Corporation
    • Intel
    • Intel Corporation
    • Components Research, Intel Corporation, 2501 NW 229th Avenue, Hillsboro, OR, 97124, USA