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