Library
local_library Home Repository

In-plane selective area InSb–Al nanowire quantum networks

Journal Article (2020)
Author(s)

Roy L.M. Op het Veld (TU Delft - QRD/Kouwenhoven Lab, Eindhoven University of Technology, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Di Xu (TU Delft - QRD/Kouwenhoven Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

Vanessa Schaller (TU Delft - QRD/Kouwenhoven Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

Qingzhen Wang (TU Delft - QuTech Advanced Research Centre, TU Delft - QRD/Goswami Lab, Kavli institute of nanoscience Delft)

Michiel W.A. de Moor (Kavli institute of nanoscience Delft, TU Delft - QRD/Kouwenhoven Lab, TU Delft - QuTech Advanced Research Centre)

Kiefer Vermeulen (TU Delft - BUS/Quantum Delft, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Jouri D.S. Bommer (TU Delft - QRD/Kouwenhoven Lab, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Leo P. Kouwenhoven (Microsoft Quantum Lab Delft, TU Delft - QN/Kouwenhoven Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

Hao Zhang (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QRD/Kouwenhoven Lab, Tsinghua University)

undefined More Authors (External organisation)

Research Group
QRD/Kouwenhoven Lab
DOI related publication
https://doi.org/10.1038/s42005-020-0324-4
More Info
expand_more
Publication Year
2020
Language
English
Research Group
QRD/Kouwenhoven Lab
Issue number
1
Volume number
3
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

Strong spin–orbit semiconductor nanowires coupled to a superconductor are predicted to host Majorana zero modes. Exchange (braiding) operations of Majorana modes form the logical gates of a topological quantum computer and require a network of nanowires. Here, we utilize an in-plane selective area growth technique for InSb–Al semiconductor–superconductor nanowire networks. Transport channels, free from extended defects, in InSb nanowire networks are realized on insulating, but heavily mismatched InP (111)B substrates by full relaxation of the lattice mismatch at the nanowire/substrate interface and nucleation of a complete network from a single nucleation site by optimizing the surface diffusion length of the adatoms. Essential quantum transport phenomena for topological quantum computing are demonstrated in these structures including phase-coherence lengths exceeding several micrometers with Aharonov–Bohm oscillations up to five harmonics and a hard superconducting gap accompanied by 2e-periodic Coulomb oscillations with an Al-based Cooper pair island integrated in the nanowire network.