中国光学2021，Vol.14Issue(5)：1251-1258,8.DOI:10.37188/CO.2020-0068
光子辅助Fano共振隧穿周期双阱势特性
Photon-assisted Fano resonance tunneling periodic double-well potential characteristics
摘要
Abstract
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 in-vestigation 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 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 3π/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 inter-esting physical properties can be used for the modulation of Dirac electron transport properties in graphene.关键词
物理光学/共振隧穿/光子辅助隧穿/狄拉克电子/量子光学Key words
physical optics/resonant tunneling/photon-assisted tunneling/dirac electrons/quantum optics分类
信息技术与安全科学引用本文复制引用
张永棠..光子辅助Fano共振隧穿周期双阱势特性[J].中国光学,2021,14(5):1251-1258,8.基金项目
国家自然科学基金(No. 61663029) （No. 61663029）
广东省高校重点平台与特色创新项目(No. 2020KTSCX171)Supported by National Natural Science Foundation of China(No.61663029) （No. 2020KTSCX171）
Key Platform and CharacteristicInnovation Project for Universities of Guangdong Province(No.2020KTSCX171) （No.2020KTSCX171）
