Mode Hybridization Analysis of Bus Resonators for a Superconducting Multi-Qubit Chip

ORAL

Abstract

We present an effective numerical method to analyze the mode hybridization in a multi-transmon circuit QED chip. Surface code, a promising architecture for fault-tolerant quantum computing, requires qubits with connectivity to all nearest neighbors. This extensive interconnectivity together with strong coupling between qubits and resonators causes mode hybridization. A complete analysis of the chip is needed in these conditions to accurately predict the loaded frequency of the bus resonators and thereby also the two-qubit gate time. We present and experimentally verify a simulation method for analyzing the complete chip combining finite-element electromagnetic simulation with numerical circuit simulation for accurate and fast computation. This research is funded by Intel Corporation and IARPA (U.S. Army Research Office grant W911NF-16-1-0071).

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Presenters

  • Nadia Haider

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

Authors

  • Nadia Haider

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

  • Jonathan Gnanadhas

    QuTech, Netherlands Organisation for Applied Scientific Research (TNO) and Delft University of Technology, Delft, The Netherlands

  • Marc Beekman

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

  • Rene Vollmer

    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

  • Roman Caudillo

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

  • 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

  • David Michalak

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

  • 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

  • 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

  • Adel A Elsherbini

    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

  • Alexander Yarovoy

    Microwave Sensing, Signals and Systems, Delft University of Technology, Delft, The Netherlands

  • Jim Clarke

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

  • 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