Noise Correlations in a Coulomb Blockaded Quantum Dot
Mesoscale and Nanoscale Physics
2009-11-13 v1
Abstract
We report measurements of current noise auto- and cross-correlation in a tunable quantum dot with two or three leads. As the Coulomb blockade is lifted at finite source-drain bias, the auto-correlation evolves from super-Poissonian to sub-Poissonian in the two-lead case, and the cross-correlation evolves from positive to negative in the three-lead case, consistent with transport through multiple levels. Cross-correlations in the three-lead dot are found to be proportional to the noise in excess of the Poissonian value in the limit of weak output tunneling.
Cite
@article{arxiv.cond-mat/0703419,
title = {Noise Correlations in a Coulomb Blockaded Quantum Dot},
author = {Y. Zhang and L. DiCarlo and D. T. McClure and M. Yamamoto and S. Tarucha and C. M. Marcus and M. P. Hanson and A. C. Gossard},
journal= {arXiv preprint arXiv:cond-mat/0703419},
year = {2009}
}