Mélanie Ruelle

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Contrary to fermions and bosons, anyons are quasiparticles that keep a
robust memory of particle exchanges via a braiding phase factor. This
provides them with unique dynamical properties so far unexplored. When
an anyon excitation is emitted toward a quantum point contact (QPC) in a
fractional quantum Hall (FQH) fluid, this memory translates into
tunneling events that may occur long after the anyon excitation has
exited the QPC. Here, we use triggered anyon pulses incident on a QPC in
a nu= 1/3 FQH fluid to investigate anyon tunneling in the time domain.
We observe that braiding increases the tunneling timescale, which is set
by the temperature and the anyon scaling dimension that characterizes
the edge state dynamics. This contrasts with the electron behavior where
braiding is absent and the tunneling timescale is set by the temporal
width of the generated electron pulses. Our experiment introduces
time-domain measurements for characterizing the braiding phase and
scaling dimension of anyons.

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ENS
PH2
Contact: Daniel Rosenbach / Matteo