Shot Noise in Anyonic Mach-Zehnder Interferometer

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

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Scientific paper

10.1103/PhysRevB.76.085333

We show how shot noise in an electronic Mach-Zehnder interferometer in the fractional quantum Hall regime probes the charge and statistics of quantum Hall quasiparticles. The dependence of the noise on the magnetic flux through the interferometer allows for a simple way to distinguish Abelian from non-Abelian quasiparticle statistics. In the Abelian case, the Fano factor (in units of the electron charge) is always lower than unity. In the non-Abelian case, the maximal Fano factor as a function of the magnetic flux exceeds one.

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