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Andreev molecules in semiconductor nanowire double quantum dots

Author

Listed:
  • Zhaoen Su

    (University of Pittsburgh)

  • Alexandre B. Tacla

    (University of Strathclyde)

  • Moïra Hocevar

    (Universite Grenoble Alpes
    Institut Neel)

  • Diana Car

    (Eindhoven University of Technology)

  • Sébastien R. Plissard

    (Université de Toulouse)

  • Erik P. A. M. Bakkers

    (Eindhoven University of Technology
    Delft University of Technology)

  • Andrew J. Daley

    (University of Strathclyde)

  • David Pekker

    (University of Pittsburgh)

  • Sergey M. Frolov

    (University of Pittsburgh)

Abstract

Chains of quantum dots coupled to superconductors are promising for the realization of the Kitaev model of a topological superconductor. While individual superconducting quantum dots have been explored, control of longer chains requires understanding of interdot coupling. Here, double quantum dots are defined by gate voltages in indium antimonide nanowires. High transparency superconducting niobium titanium nitride contacts are made to each of the dots in order to induce superconductivity, as well as probe electron transport. Andreev bound states induced on each of dots hybridize to define Andreev molecular states. The evolution of these states is studied as a function of charge parity on the dots, and in magnetic field. The experiments are found in agreement with a numerical model.

Suggested Citation

  • Zhaoen Su & Alexandre B. Tacla & Moïra Hocevar & Diana Car & Sébastien R. Plissard & Erik P. A. M. Bakkers & Andrew J. Daley & David Pekker & Sergey M. Frolov, 2017. "Andreev molecules in semiconductor nanowire double quantum dots," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00665-7
    DOI: 10.1038/s41467-017-00665-7
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    Cited by:

    1. Sadashige Matsuo & Takaya Imoto & Tomohiro Yokoyama & Yosuke Sato & Tyler Lindemann & Sergei Gronin & Geoffrey C. Gardner & Sho Nakosai & Yukio Tanaka & Michael J. Manfra & Seigo Tarucha, 2023. "Phase-dependent Andreev molecules and superconducting gap closing in coherently-coupled Josephson junctions," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Marco Coraiola & Daniel Z. Haxell & Deividas Sabonis & Hannes Weisbrich & Aleksandr E. Svetogorov & Manuel Hinderling & Sofieke C. Kate & Erik Cheah & Filip Krizek & Rüdiger Schott & Werner Wegscheide, 2023. "Phase-engineering the Andreev band structure of a three-terminal Josephson junction," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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