Abstract
In this work, with the completely asymmetric terahertz (THz) irradiation, electron transport through a two-level InAs quantum dot is theoretically discussed. The Coulomb interaction in this system is compared with the energy difference between the two energy levels and is finite contrasted with the Microwave Field system. We investigate the average current trend with the change of Coulomb interaction and the THz irradiation strength. Our results reveal that there exists the photon-electron pump effect at the Coulomb interaction related energy level, and demonstrate Fano-like resonance in the low THz field strength due to the presence of the photon induced excited state resonance. We also find that the Fano-like resonance can be suppressed with increasing the temperature.
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