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

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

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.

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A. Högele, S. Seidl, M. Kroner, K. Karrai, M. Atatüre, J. Dreiser, A. Imamoglu, R. J. Warburton, B. D. Gerardot, P. M. Petroff. 2005-09-06. Voltage-controlled electron-hole interaction in a single quantum dot. https://doi.org/10.1007/s10948-005-3377-4

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