Nature Communications (Apr 2019)

Microwave photons emitted by fractionally charged quasiparticles

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

DOI
https://doi.org/10.1038/s41467-019-09758-x
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 7

Abstract

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One of the many intriguing possibilities in strongly interacting quantum systems is the formation of emergent excitations with fractional charges. Here the authors show how the high-frequency noise emitted by a dc-biased quantum point contact can be used to demonstrate charge fractionalization.