Microwave photons emitted by fractionally charged quasiparticles. View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2019-12

AUTHORS

R Bisognin, H Bartolomei, M Kumar, I Safi, J-M Berroir, E Bocquillon, B Plaçais, A Cavanna, U Gennser, Y Jin, G Fève

ABSTRACT

Strongly correlated low-dimensional systems can host exotic elementary excitations carrying a fractional charge q and potentially obeying anyonic statistics. In the fractional quantum Hall effect, their fractional charge has been successfully determined owing to low frequency shot noise measurements. However, a universal method for sensing them unambiguously and unraveling their intricate dynamics was still lacking. Here, we demonstrate that this can be achieved by measuring the microwave photons emitted by such excitations when they are transferred through a potential barrier biased with a dc voltage Vdc. We observe that only photons at frequencies f below qVdc/h are emitted. This threshold provides a direct and unambiguous determination of the charge q, and a signature of exclusion statistics. Derived initially within the Luttinger model, this feature is also predicted by universal non-equilibrium fluctuation relations which agree fully with our measurements. Our work paves the way for further exploration of anyonic statistics using microwave measurements. More... »

PAGES

1708

References to SciGraph publications

Journal

TITLE

Nature Communications

ISSUE

1

VOLUME

10

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/s41467-019-09758-x

DOI

http://dx.doi.org/10.1038/s41467-019-09758-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1113380239

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30979891


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