Article ID Journal Published Year Pages File Type
1546726 Physica E: Low-dimensional Systems and Nanostructures 2007 8 Pages PDF
Abstract

We have measured the current fluctuations in a quantum dot using a quantum point contact as a charge detector. By determining the distribution function for the charge transferred through the quantum dot, we get access not only to the shot noise but also to higher order moments. The noise in the quantum dot was found to be reduced compared to the single-barrier case. The reduction can be explained by an increase in temporal correlation due to the Coulomb blockade. Furthermore, we have used the time-resolved measurement techniques to investigate degenerate states in the quantum dot.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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