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Noise Correlations in a Coulomb-Blockaded Quantum Dot
Physical Review Letters
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 excessdoi:10.1103/physrevlett.99.036603 pmid:17678305 fatcat:dd3o6qflenawbe7gdgbeuj2x3a