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Two-particle time-domain interferometry in the fractional quantum Hall effect regime

Quasi-particles are elementary excitations of condensed matter quantum phases. Demonstrating that they keep quantum coherence while propagating is a fundamental issue for their manipulation for quantum information tasks. Here, we consider anyons, the fractionally charged quasi-particles of the Fract...

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Autores principales: Taktak, I., Kapfer, M., Nath, J., Roulleau, P., Acciai, M., Splettstoesser, J., Farrer, I., Ritchie, D. A., Glattli, D. C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532452/
https://www.ncbi.nlm.nih.gov/pubmed/36195621
http://dx.doi.org/10.1038/s41467-022-33603-3
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author Taktak, I.
Kapfer, M.
Nath, J.
Roulleau, P.
Acciai, M.
Splettstoesser, J.
Farrer, I.
Ritchie, D. A.
Glattli, D. C.
author_facet Taktak, I.
Kapfer, M.
Nath, J.
Roulleau, P.
Acciai, M.
Splettstoesser, J.
Farrer, I.
Ritchie, D. A.
Glattli, D. C.
author_sort Taktak, I.
collection PubMed
description Quasi-particles are elementary excitations of condensed matter quantum phases. Demonstrating that they keep quantum coherence while propagating is a fundamental issue for their manipulation for quantum information tasks. Here, we consider anyons, the fractionally charged quasi-particles of the Fractional Quantum Hall Effect occurring in two-dimensional electronic conductors in high magnetic fields. They obey anyonic statistics, intermediate between fermionic and bosonic. Surprisingly, anyons show large quantum coherence when transmitted through the localized states of electronic Fabry-Pérot interferometers, but almost no quantum interference when transmitted via the propagating states of Mach-Zehnder interferometers. Here, using a novel interferometric approach, we demonstrate that anyons do keep quantum coherence while propagating. Performing two-particle time-domain interference measurements sensitive to the two-particle Hanbury Brown Twiss phase, we find 53 and 60% visibilities for anyons with charges e/5 and e/3. Our results give a positive message for the challenge of performing controlled quantum coherent braiding of anyons.
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spelling pubmed-95324522022-10-06 Two-particle time-domain interferometry in the fractional quantum Hall effect regime Taktak, I. Kapfer, M. Nath, J. Roulleau, P. Acciai, M. Splettstoesser, J. Farrer, I. Ritchie, D. A. Glattli, D. C. Nat Commun Article Quasi-particles are elementary excitations of condensed matter quantum phases. Demonstrating that they keep quantum coherence while propagating is a fundamental issue for their manipulation for quantum information tasks. Here, we consider anyons, the fractionally charged quasi-particles of the Fractional Quantum Hall Effect occurring in two-dimensional electronic conductors in high magnetic fields. They obey anyonic statistics, intermediate between fermionic and bosonic. Surprisingly, anyons show large quantum coherence when transmitted through the localized states of electronic Fabry-Pérot interferometers, but almost no quantum interference when transmitted via the propagating states of Mach-Zehnder interferometers. Here, using a novel interferometric approach, we demonstrate that anyons do keep quantum coherence while propagating. Performing two-particle time-domain interference measurements sensitive to the two-particle Hanbury Brown Twiss phase, we find 53 and 60% visibilities for anyons with charges e/5 and e/3. Our results give a positive message for the challenge of performing controlled quantum coherent braiding of anyons. Nature Publishing Group UK 2022-10-04 /pmc/articles/PMC9532452/ /pubmed/36195621 http://dx.doi.org/10.1038/s41467-022-33603-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Taktak, I.
Kapfer, M.
Nath, J.
Roulleau, P.
Acciai, M.
Splettstoesser, J.
Farrer, I.
Ritchie, D. A.
Glattli, D. C.
Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title_full Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title_fullStr Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title_full_unstemmed Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title_short Two-particle time-domain interferometry in the fractional quantum Hall effect regime
title_sort two-particle time-domain interferometry in the fractional quantum hall effect regime
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9532452/
https://www.ncbi.nlm.nih.gov/pubmed/36195621
http://dx.doi.org/10.1038/s41467-022-33603-3
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