Two-photon Rabi oscillations in a single InxGa1xAsGaAs quantum dot

S. Stufler, P. Machnikowski, P. Ester, M. Bichler, V. M. Axt, T. Kuhn, and A. Zrenner
Phys. Rev. B 73, 125304 – Published 7 March 2006

Abstract

We report on Rabi oscillations of the biexciton in a single InxGa1xAsGaAs quantum dot, induced via a coherent two-photon process. In contrast to single-exciton Rabi oscillations the measured population oscillation is not purely sinusoidal in excitation pulse area. The experimental results are well reproduced by a theoretical calculation that relies only on the pulse shape and biexciton binding energy. Dephasing times of the biexciton are similar to those of the single exciton under the applied measurement conditions reaching up to 220ps.

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  • Received 22 November 2005

DOI:https://doi.org/10.1103/PhysRevB.73.125304

©2006 American Physical Society

Authors & Affiliations

S. Stufler1,*, P. Machnikowski2, P. Ester1, M. Bichler3, V. M. Axt4, T. Kuhn4, and A. Zrenner1

  • 1Universität Paderborn, Warburger Straße 100, D-33098 Paderborn, Germany
  • 2Instytut Fizyki Politechniki Wrocławskiej, Wybrzeże Wyspiańskiego 27, PL-50-370 Wrocław, Poland
  • 3Walter Schottky Institut, Technische Universität München, Am Coulombwall, D-85748 Garching, Germany
  • 4Institut für Festkörpertheorie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 10, D-48149 Münster, Germany

  • *Electronic address: stufler@physik.upb.de

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Vol. 73, Iss. 12 — 15 March 2006

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