A Josephson relation for fractionally charged anyons.
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| Title: | A Josephson relation for fractionally charged anyons. |
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| Authors: | Kapfer, M. (AUTHOR), Roulleau, P. (AUTHOR), Santin, M. (AUTHOR), Farrer, I. (AUTHOR), Ritchie, D. A. (AUTHOR), Glattli, D. C. (AUTHOR) |
| Source: | Science (pre-March 2025). 2/22/2019, Vol. 363 Issue 6429, p846-849. 4p. 3 Diagrams. |
| Subjects: | Anyons, Josephson effect, Quantum Hall effect, Quantum noise, Quantum information theory, Planck's constant, Microwaves |
| Abstract: | Anyons occur in two-dimensional electron systems as excitations with fractional charge in the topologically ordered states of the fractional quantum Hall effect (FQHE).Their dynamics are of utmost importance for topological quantum phases and possible decoherence-free quantum information approaches, but observing these dynamics experimentally is challenging. Here, we report on a dynamical property of anyons: the long-predicted Josephson relation fJ = e*V/h for charges e* = e/3 and e/5, where e is the charge of the electron and h is Planck’s constant. The relation manifests itself as marked signatures in the dependence of photo-assisted shot noise (PASN) on voltage V when irradiating contacts at microwaves frequency fJ.The validation of FQHE PASN models indicates a path toward realizing time-resolved anyon sources based on levitons. [ABSTRACT FROM AUTHOR] |
| Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Abstract: | Anyons occur in two-dimensional electron systems as excitations with fractional charge in the topologically ordered states of the fractional quantum Hall effect (FQHE).Their dynamics are of utmost importance for topological quantum phases and possible decoherence-free quantum information approaches, but observing these dynamics experimentally is challenging. Here, we report on a dynamical property of anyons: the long-predicted Josephson relation fJ = e*V/h for charges e* = e/3 and e/5, where e is the charge of the electron and h is Planck’s constant. The relation manifests itself as marked signatures in the dependence of photo-assisted shot noise (PASN) on voltage V when irradiating contacts at microwaves frequency fJ.The validation of FQHE PASN models indicates a path toward realizing time-resolved anyon sources based on levitons. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00368075 |
| DOI: | 10.1126/science.aau3539 |
