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

A. Högele, S. Seidl, M. Kroner, K. Karrai, R. J. Warburton, M. Atatüre, J. Dreiser, A. Imamoǧlu, B. D. Gerardot, P. M. Petroff

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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. © 2005 Springer Science+Business Media, Inc.

Original languageEnglish
Pages (from-to)245-249
Number of pages5
JournalJournal of Superconductivity and Novel Magnetism
Issue number2
Publication statusPublished - Apr 2005


  • Absorption
  • Charged exciton
  • Electron-hole exchange
  • Fine structure
  • Quantum dot


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