  Disorder at the etched edges of graphene quantum dots (GQD) enables random
all-to-all interactions between localized charges in partially-filled Landau
levels, providing a potential platform to realize the Sachdev-Ye-Kitaev (SYK)
model. We use quantum Hall edge states in the graphene electrodes to measure
electrical conductance and thermoelectric power across the GQD. We observe a
rapid diminishing of electric conductance fluctuations and slowly decreasing
thermoelectric power across the GQD with increasing temperature, consistent
with recent theoretical predictions for the SYK regime.
