Abstract
We investigate theoretically the electron transport of a two-levelquantum dot irradiated under a weak laser field at low temperatures inthe rotating wave approximation. Using the method of the Keldyshequation of motion for nonequilibrium Green function, we examine theconductance for the system with photon polarization perpendicular tothe tunnelling current direction. It is demonstrated that by analyticanalysing and numerical examples, a feature of conductance peaksplitting appears, and the dependence of conductance on the incidentlaser frequency and self-energy are discussed.
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