Abstract: Using the Keldysh-Green function,we present a theoretical study on the electron transport properties of two coupled quantum dots under optical pumping.Plateaus in the I-V curve and resonant peaks in the transmission coefficient occur and can be explained by the local electron density of states in the quantum dots.The effects of the optical pumping frequency and intensity on the transport properties of the system are also discussed.The electron dynamical localization phenomenon occurs when the optical pumping frequency is equal to the discrete hole energy level.This result can be used to realize optical control switches.

Key words: Keldysh-Green function, optical pumping, quantum dot, electron transport, dynamical localization