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Journal of Physics Conference Series

A new method for coherent control in a quantum dot ensemble

Mamiko Kujiraoka, Junko Ishi‐Hayase, Kouichi Akahane, Naokatsu Yamamoto, Kazuhiro Ema, Masahide Sasaki

Published Nov 1, 2009• 0 citations
Publisher

Abstract

We propose a new method for controlling macroscopic coherent phenomena by taking advantage of the characteristics of quantum dot (QD) ensembles. We demonstrate that the ensemble average of Rabi oscillations of excitonic polarization can be changed drastically by selecting the spatial distributions of input electric fields. We show that the changes in ensemble averages are caused by polarization interference; the results of our previous experiments agree with our calculations. This result demonstrates that a macroscopic coherent response from a QD ensemble can be controlled by changing the spatial distribution of excitation beams.

DOI
10.1088/1742-6596/193/1/012125

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