Photon-assisted Fano Resonance and Corresponding Shot-Noise in a Quantum Dot

Details Photon-assisted Fano Resonance and Corresponding Shot-Noise in a Quantum Dot Photon-assisted Fano Resonance and Corresponding Shot-Noise in a Quantum Dot

2003-04-02

arxiv.org/abs/cond-mat/0304045v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.69.045302

We have studied the Fano resonance in photon-assisted transport in a quantum dot and calculated both the coherent current and spectral density of shot noise. It is predicted, for the first time, that the shape of Fano profile will also appear in satellite peaks. It is found that the variations of Fano profiles with the strengths of nonresonant transmissions are not synchronous in absorption and emission sidebands. The effect of interference on photon-assisted pumped current has been also investigated. We further predict the current and spectral density of shot noise as a function of the phase, which exhibits an intrinsic property of resonant and nonresonant channels in the structures.

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