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Physical Review Letters

Quantum beats of excitons in quantum wells

Ernst Otto Göbel, Karl Leo, Theo C. Damen, Jagdeep Shah, Stefan Schmitt-Rink, Wilfried Schäfer, J. F. Müller, Klaus Köhler

Published Apr 9, 1990• 224 citations
Publisher

Abstract

We report the observation of quantum beats in the decay of the coherent polarization of intrinsic excitations in GaAs/GaAlAs quantum wells. The beating arises from interference of excitons with slightly different quantum confinement energy due to well width fluctuations.
DOI
10.1103/physrevlett.64.1801

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