Nature Communications (Aug 2021)

Shadow-wall lithography of ballistic superconductor–semiconductor quantum devices

  • Sebastian Heedt,
  • Marina Quintero-Pérez,
  • Francesco Borsoi,
  • Alexandra Fursina,
  • Nick van Loo,
  • Grzegorz P. Mazur,
  • Michał P. Nowak,
  • Mark Ammerlaan,
  • Kongyi Li,
  • Svetlana Korneychuk,
  • Jie Shen,
  • May An Y. van de Poll,
  • Ghada Badawy,
  • Sasa Gazibegovic,
  • Nick de Jong,
  • Pavel Aseev,
  • Kevin van Hoogdalem,
  • Erik P. A. M. Bakkers,
  • Leo P. Kouwenhoven

DOI
https://doi.org/10.1038/s41467-021-25100-w
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

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Advanced fabrication techniques enable a wide range of quantum devices, such as the realization of a topological qubit. Here, the authors introduce an on-chip fabrication technique based on shadow walls to implement topological qubits in an InSb nanowire without fabrication steps such as lithography and etching.