Volume 14 Issue 5
Sep.  2021
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ZHANG Yong-tang. Photon-assisted Fano resonance tunneling periodic double-well potential characteristics[J]. Chinese Optics, 2021, 14(5): 1251-1258. doi: 10.37188/CO.2020-0068
Citation: ZHANG Yong-tang. Photon-assisted Fano resonance tunneling periodic double-well potential characteristics[J]. Chinese Optics, 2021, 14(5): 1251-1258. doi: 10.37188/CO.2020-0068

Photon-assisted Fano resonance tunneling periodic double-well potential characteristics

doi: 10.37188/CO.2020-0068
Funds:  Supported by National Natural Science Foundation of China (No. 61663029); Key Platform and Characteristic Innovation Project for Universities of Guangdong Province (No. 2020KTSCX171)
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  • Author Bio:

    Zhang Yong-tang (1981—), male, born in Nanchang, Jiangxi Province. He is a doctor, Professor and master supervisor. He obtained his doctor's degree from Xiamen University in 2018, He is mainly engaged in the research of optical communication and network security perception. Email: gov211@163.com

  • Corresponding author: gov211@163.com
  • Received Date: 21 Apr 2020
  • Rev Recd Date: 08 Jun 2020
  • Available Online: 21 Jun 2021
  • Publish Date: 18 Sep 2021
  • Optical properties of periodic double-well potential are one of the frontier research fields in laser physics and quantum optics. In this work, we have employed time-periodic double-well potential for the investigation of Fano-type resonant tunneling of photon-assisted Dirac electrons in a graphene system. Using a double quantum well structure, it is found that the resonant tunneling of electrons in a thin barrier between the two quantum wells splits the bound state energy levels, and the Fano-type resonance spectrum splits into two asymmetric resonance peaks. The shape of Fano peak is regulated by changing the phase, frequency, and amplitude, that can directly modulate the electronic transport properties of Dirac in graphene. Our numerical analysis shows that the relative phase of two oscillating fields can adjust the shape of the asymmetric Fano type resonance peak. When the relative phase increases from 0 to ${\text{π}}$, the resonance peak valley moves from one side of the peak to the other. In addition, the asymmetric resonance peak becomes symmetric at critical phase ${{3{\text{π}} }/{11}}$. Furthermore, the distribution of Fano peaks can be modulated by varying the frequency and amplitude of oscillating field and the structure of the static potential well. Finally, we suggest that these interesting physical properties can be used for the modulation of Dirac electron transport properties in graphene.

     

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