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Observation of the 4π-periodic Josephson effect in indium arsenide nanowires
Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance by encoding quantum information in the non-local charge parity states of semiconductor nanowire networks in the topological superconductor regime. Thus far, experimental studies of MZMs chiefl...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6335404/ https://www.ncbi.nlm.nih.gov/pubmed/30651552 http://dx.doi.org/10.1038/s41467-018-08161-2 |
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author | Laroche, Dominique Bouman, Daniël van Woerkom, David J. Proutski, Alex Murthy, Chaitanya Pikulin, Dmitry I. Nayak, Chetan van Gulik, Ruben J. J. Nygård, Jesper Krogstrup, Peter Kouwenhoven, Leo P. Geresdi, Attila |
author_facet | Laroche, Dominique Bouman, Daniël van Woerkom, David J. Proutski, Alex Murthy, Chaitanya Pikulin, Dmitry I. Nayak, Chetan van Gulik, Ruben J. J. Nygård, Jesper Krogstrup, Peter Kouwenhoven, Leo P. Geresdi, Attila |
author_sort | Laroche, Dominique |
collection | PubMed |
description | Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance by encoding quantum information in the non-local charge parity states of semiconductor nanowire networks in the topological superconductor regime. Thus far, experimental studies of MZMs chiefly relied on single electron tunneling measurements, which lead to the decoherence of the quantum information stored in the MZM. As a next step towards topological quantum computation, charge parity conserving experiments based on the Josephson effect are required, which can also help exclude suggested non-topological origins of the zero bias conductance anomaly. Here we report the direct measurement of the Josephson radiation frequency in indium arsenide nanowires with epitaxial aluminium shells. We observe the 4π-periodic Josephson effect above a magnetic field of ≈200 mT, consistent with the estimated and measured topological phase transition of similar devices. |
format | Online Article Text |
id | pubmed-6335404 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63354042019-01-18 Observation of the 4π-periodic Josephson effect in indium arsenide nanowires Laroche, Dominique Bouman, Daniël van Woerkom, David J. Proutski, Alex Murthy, Chaitanya Pikulin, Dmitry I. Nayak, Chetan van Gulik, Ruben J. J. Nygård, Jesper Krogstrup, Peter Kouwenhoven, Leo P. Geresdi, Attila Nat Commun Article Quantum computation by non-Abelian Majorana zero modes (MZMs) offers an approach to achieve fault tolerance by encoding quantum information in the non-local charge parity states of semiconductor nanowire networks in the topological superconductor regime. Thus far, experimental studies of MZMs chiefly relied on single electron tunneling measurements, which lead to the decoherence of the quantum information stored in the MZM. As a next step towards topological quantum computation, charge parity conserving experiments based on the Josephson effect are required, which can also help exclude suggested non-topological origins of the zero bias conductance anomaly. Here we report the direct measurement of the Josephson radiation frequency in indium arsenide nanowires with epitaxial aluminium shells. We observe the 4π-periodic Josephson effect above a magnetic field of ≈200 mT, consistent with the estimated and measured topological phase transition of similar devices. Nature Publishing Group UK 2019-01-16 /pmc/articles/PMC6335404/ /pubmed/30651552 http://dx.doi.org/10.1038/s41467-018-08161-2 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Laroche, Dominique Bouman, Daniël van Woerkom, David J. Proutski, Alex Murthy, Chaitanya Pikulin, Dmitry I. Nayak, Chetan van Gulik, Ruben J. J. Nygård, Jesper Krogstrup, Peter Kouwenhoven, Leo P. Geresdi, Attila Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title | Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title_full | Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title_fullStr | Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title_full_unstemmed | Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title_short | Observation of the 4π-periodic Josephson effect in indium arsenide nanowires |
title_sort | observation of the 4π-periodic josephson effect in indium arsenide nanowires |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6335404/ https://www.ncbi.nlm.nih.gov/pubmed/30651552 http://dx.doi.org/10.1038/s41467-018-08161-2 |
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