Interference, Coulomb blockade, and the identification of non-Abelian quantum Hall states

Ady Stern*, Bernd Rosenow, Roni Ilan, Bertrand I. Halperin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We study electronic-transport phenomena in a Fabry-Perot interferometer in the fractional quantum Hall regime in two limits. We analyze the lowest-order interference pattern in a nearly open interferometer (weak-backscattering limit) and the temperature dependence of the Coulomb-blockade transmission peaks in a nearly closed interferometer (strong-backscattering limit). For both limits, we consider two series of fractional quantized Hall states, one with Abelian and one with non-Abelian quasiparticles. We show that the results obtained in the two limits give identical information about the quasiparticle statistics. Although the experimental signatures of the Abelian and non-Abelian states may be similar in some circumstances, we argue that the two cases may be distinguished due to the sensitivity of the Abelian states to local perturbations, to which the non-Abelian states are insensitive.

Original languageEnglish
Article number085321
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number8
StatePublished - 19 Aug 2010
Externally publishedYes


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