%0 Journal Article
%T Counting statistics in an InAs nanowire quantum dot with a vertically coupled charge detector
%A Theodore Choi
%A Thomas Ihn
%A Silke Sch£¿n
%A Klaus Ensslin
%J Physics
%D 2012
%I arXiv
%R 10.1063/1.3687198
%X A gate-defined quantum dot in an InAs nanowire is fabricated on top of a quantum point contact realized in a two-dimensional electron gas. The strong coupling between these two quantum devices is used to perform time-averaged as well as time-resolved charge detection experiments for electron flow through the quantum dot. We demonstrate that the Fano factor describing shot noise or time-correlations in single-electron transport depends in the theoretically expected way on the asymmetry of the tunneling barriers even in a regime where the thermal energy $k_\mathrm{B}T$ is comparable to the single-particle level spacing in the dot.
%U http://arxiv.org/abs/1202.4273v1