Observation of the 4π-periodic Josephson effect in indium arsenide nanowires

Dominique Laroche; Daniël Bouman; David J. van Woerkom; Alex Proutski; Chaitanya Murthy; Dmitry I. Pikulin; Chetan Nayak; Ruben J. J. van Gulik; Jesper Nygård; Peter Krogstrup; Leo P. Kouwenhoven; Attila Geresdi

doi:10.1038/s41467-018-08161-2

Nature Communications (Jan 2019)

Observation of the 4π-periodic Josephson effect in indium arsenide nanowires

Dominique Laroche,
Daniël Bouman,
David J. van Woerkom,
Alex Proutski,
Chaitanya Murthy,
Dmitry I. Pikulin,
Chetan Nayak,
Ruben J. J. van Gulik,
Jesper Nygård,
Peter Krogstrup,
Leo P. Kouwenhoven,
Attila Geresdi

Affiliations

Dominique Laroche: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
Daniël Bouman: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
David J. van Woerkom: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
Alex Proutski: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
Chaitanya Murthy: Department of Physics, University of California
Dmitry I. Pikulin: Station Q, Microsoft Research
Chetan Nayak: Department of Physics, University of California
Ruben J. J. van Gulik: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
Jesper Nygård: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Peter Krogstrup: Center for Quantum Devices and Station Q Copenhagen, Niels Bohr Institute, University of Copenhagen
Leo P. Kouwenhoven: QuTech and Kavli Institute of Nanoscience, Delft University of Technology
Attila Geresdi: QuTech and Kavli Institute of Nanoscience, Delft University of Technology

DOI: https://doi.org/10.1038/s41467-018-08161-2
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 7

Abstract

Read online

The interplay of induced superconductivity and magnetic fields should drive InAs nanowires into a topological superconducting phase. Laroche et al. use the microwave radiation emitted by an InAs nanowire Josephson junction to observe the 4π-periodic Josephson effect, a hallmark of the topological phase.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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