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Frontiers in Optics

Quantum Optical Experiments on Semiconductor Quantum Wells Systems

Steven T. Cundiff, Andrew E. Almand-Hunter, Eric W. Martin, Hebin Li

Published Jan 1, 2014• 0 citations
Publisher

Abstract

Many-body excitations in semiconductors are probed by exploiting the mapping between quantum optical correlations and electron-hole correlations. The experimentally measured response to coherent states is projected to determine the effect of quantum optical statistics.
DOI
10.1364/ls.2014.lm3g.3

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Summary form only given. Irreversible absorption of light in any material requires that the coherence of the initial photoexcited state be lost. In quantum-engineered semiconductor systems, decoherence cannot be treated merely phenomenologically, and coherent phenomena play a dramatic role, even in the linear optical properties. We have devised an ultrafast coherent spectroscopy that directly tracks the evolution of the electron-hole phase after excitation with a laser pulse. In high-quality quantum well samples, this general technique uncovers a coherent response differing strongly from that observed on incoherent excitation.
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