Noise enhancement due to quantum coherence in coupled quantum dots

Details Noise enhancement due to quantum coherence in coupled quantum dots Noise enhancement due to quantum coherence in coupled quantum dots

2007-06-12

arxiv.org/abs/0706.1737v3

Phys. Rev. Lett. 99, 206602 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, corrected version (Figs.2 and 3)

Scientific paper

10.1103/PhysRevLett.99.206602

We show that the intriguing observation of noise enhancement in the charge transport through two vertically coupled quantum dots can be explained by the interplay of quantum coherence and strong Coulomb blockade. We demonstrate that this novel mechanism for super-Poissonian charge transfer is very sensitive to decoherence caused by electron-phonon scattering as inferred from the measured temperature dependence.

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