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Microscopic measurement of photon echo formation in groups of individual excitonic transitions

The third-order polarization emitted from groups of individual localized excitonic transitions after pulsed optical excitation is measured. We observe the evolution of the nonlinear response from the case of a free polarization decay for a single transition, to that of a photon echo for many transitions. The echo is shown to arise from the mutual rephasing of the emission from individual transitions.

preprint2005arXivOpen access
Wolfgang LangbeinBrian Patton
cond-mat.other
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Open access2 authors1 topic
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Wolfgang LangbeinBrian Patton

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