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Tunable Noise Cross-Correlations in a Double Quantum Dot

D. T. McClure·L. DiCarlo·Y. Zhang·H. -A. Engel·C. M. Marcus·M. P. Hanson·A. C. Gossard
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Abstract

We report measurements of the cross-correlation between current noise fluctuations in two capacitively coupled quantum dots in the Coulomb blockade regime. The sign of the cross-spectral density is found to be tunable by gate voltage and source-drain bias. Good agreement is found with a model of sequential tunneling through the dots in the presence of inter-dot capacitive coupling.

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D. T. McClure, L. DiCarlo, Y. Zhang, H. -A. Engel, C. M. Marcus, M. P. Hanson, A. C. Gossard. 2006-07-11. Tunable Noise Cross-Correlations in a Double Quantum Dot. https://doi.org/10.1103/physrevlett.98.056801

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