Photon-assisted Fano resonance and corresponding shot noise in a quantum dot

Zhongshui Ma, Yu Zhu, Xin-Qi Li, Tsung-han Lin, and Zhao-Bin Su
Phys. Rev. B 69, 045302 – Published 6 January 2004
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Abstract

We have studied the Fano resonance in photon-assisted transport through a quantum dot. Both the coherent current and the spectral density of shot noise have been calculated. It is predicted that the shape of the 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 also been investigated. We further predict the current and spectral density of shot noise as a periodic function of the phase, which exhibits an intrinsic property of resonant and nonresonant channels in the structures.

  • Received 15 July 2003

DOI:https://doi.org/10.1103/PhysRevB.69.045302

©2004 American Physical Society

Authors & Affiliations

Zhongshui Ma1,2, Yu Zhu1, Xin-Qi Li3, Tsung-han Lin1, and Zhao-Bin Su4

  • 1State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China
  • 2Advanced Research Center, Zhongshan University, Guangzhou 510275, China
  • 3NLSM, Institute of Semiconductors, CAS, Beijing 100083, China
  • 4Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100080, China

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Issue

Vol. 69, Iss. 4 — 15 January 2004

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