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  • Letter

Nonlocal signatures of hybridization between quantum dot and Andreev bound states

Andreas Pöschl1, Alisa Danilenko1, Deividas Sabonis1,2, Kaur Kristjuhan1, Tyler Lindemann3, Candice Thomas3, Michael J. Manfra3,4, and Charles M. Marcus1,*

  • 1Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
  • 2Laboratory for Solid State Physics, ETH Zürich, CH-8093 Zürich, Switzerland
  • 3Department of Physics and Astronomy, and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
  • 4School of Materials Engineering, and School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, USA

  • *marcus@nbi.dk
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Phys. Rev. B 106, L161301 – Published 3 October, 2022

DOI: https://doi.org/10.1103/PhysRevB.106.L161301

Abstract

We investigate local and nonlocal signatures of hybridization between a quantum dot (QD) state and an extended Andreev bound state (ABS) in a gate-defined InAs nanowire (NW) with multiple side probes. When a QD in one of the side probes was hybridized with an ABS in the NW, a characteristic spectroscopic pattern was observed both locally, i.e., in the probe with the QD, and nonlocally, in the tunnel conductance of a remote probe. Nonlocal signatures of hybridization reveal the extended nature of the ABS.

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Phys. Rev. B 106, L161301– Published 3 October, 2022
  • Received 10 January 2022
  • Revised 5 September 2022
  • Accepted 13 September 2022
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