Design and Analysis of Multi-Qubit Superconducting Chips for Extensible Surface Coding

ORAL

Abstract

We present an effective numerical method to analyze qubit-qubit avoided crossings and two-qubit gate times in a superconducting multi-qubit chip. Our hybrid simulation approach, combining finite element and circuit simulation, is a convenient tool to investigate complex chip layouts with limited computational resources. The simulation method has been applied to design and investigate a new multi-qubit chip layout. This new chip design and improved fabrication process have allowed us to also reduce mode hybridization between qubits and resonators and to increase qubit coherence time.

*Research funded by Intel Corporation.

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Presenters

  • Nadia Haider

    • QuTech and TNO, The Netherlands
    • Netherlands Organisation for Applied Scientific Research (TNO
    • Netherlands Organization for Applied Scientific Research

Authors

  • Nadia Haider

    • QuTech and TNO, The Netherlands
    • Netherlands Organisation for Applied Scientific Research (TNO
    • Netherlands Organization for Applied Scientific Research

  • Alessandro Bruno

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

  • Marc Beekman

    • QuTech and TNO, The Netherlands

  • Piotr Kaminski

    • QuTech and TNO, The Netherlands

  • Leonardo DiCarlo

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