Coherent multiqubit operations in a six quantum dot linear array

ORAL

Abstract

Spin qubits are one of the promising candidates to build a large-scale solid-state quantum computer. These qubits are given by the spin state of a single electron confined in a quantum dot. Spin qubits are attractive because they can be operated with relatively high fidelity [1,2] and are compatible with the current CMOS industry standards [3]. In this presentation we will show the first silicon qubit system that achieves universal control beyond 2 qubits [4,5]. We will also discuss the challenges of operating a multi-qubit system, including crosstalk phenomena when driving multiple qubits at the same time, novel ways of entangling qubits and the engineering efforts involved.

[1] Yoneda, Jun, et al., Nature nanotechnology (2018)
[2] Huang, W., et al. , Nature (2019)
[3] Vandersypen, L. M. K., et al., NPJ Quantum Information (2017)
[4] Watson, T. F., et al., Nature (2018)
[5] Zajac, D. M., et al., Science (2018)

*Marie Sklodowska-Curie grant agreement No 676108
ARO

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Presenters

  • Stephan Philips

    • Delft University of Technology
    • Qutech, Delft University of Technology

Authors

  • Stephan Philips

    • Delft University of Technology
    • Qutech, Delft University of Technology

  • Mateusz T Madzik

    • Delft University of Technology
    • QuTech, Delft University of Technology
    • Univ of New South Wales

  • Maximilian Russ

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

  • Sergei Amitonov

    • Delft University of Technology
    • QuTech, Delft University of Technology

  • Delphine Brousse

    • TNO
    • QuTech, Delft University of Technology

  • Amir Sammak

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

  • Giordano Scappucci

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

  • Lieven Vandersypen

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