Super-Poissonian shot noise in the resonant tunneling due to coupling with a localized level

Details Super-Poissonian shot noise in the resonant tunneling due to coupling with a localized level Super-Poissonian shot noise in the resonant tunneling due to coupling with a localized level

2004-11-15

arxiv.org/abs/cond-mat/0411392v2

Appl. Phys. Lett. 87, 032105 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 3 figures, Appl. Phys. Lett.(in press)

Scientific paper

10.1063/1.1999020

We report our studies of the shot noise spectrum in tunneling through an interacting quantum dot when an additional single-level quantum dot without tunnel coupling to leads is coherently side-connected to it. We show that the zero-frequency shot noise could reach a super-Poissonian value for appropriate ratios between dot-dot hoppings and dot-lead couplings, but the current is independent on the hopping. Moreover, the frequency spectrum of shot noise shows an obvious peak at the Rabi frequency, which is controllable by tuning the dot-lead couplings.

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