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 Voltage-controlled electron-hole interaction in a single quantum dot


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The ground state of neutral and negatively charged excitons confined to a single self-assembled InGaAs quantum dot is probed in a direct absorption experiment by high resolution laser spectroscopy. We show how the anisotropic electron-hole exchange interaction depends on the exciton charge and demonstrate how the interaction can be switched on and off with a small dc voltage. Furthermore, we report polarization sensitive analysis of the excitonic interband transition in a single quantum dot as a function of charge with and without magnetic field.



Author: A. Högele; S. Seidl; M. Kroner; K. Karrai; M. Atatüre; J. Dreiser; A. Imamoglu; R. J. Warburton; B. D. Gerardot; P. M. Petroff

Source: https://archive.org/



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