Optical nonlinearities and Rabi flopping of an exciton population in a semiconductor interacting with strong terahertz fields

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Abstract
A fully microscopic theory is developed to study the nonlinear terahertz dynamics of incoherent excitons in semiconductor quantum wells. The theory is evaluated for strong-field excitation conditions leading to terahertz-induced population transfer, Rabi oscillations, and extreme-nonlinear dynamics. The characteristic signatures of the different effects in typical terahertz transmission-reflection experiments are identified.