Damping of Exciton Rabi Rotations by Acoustic Phonons in Optically Excited InGaAs/GaAs Quantum Dots

A. J. Ramsay, AchantaVenu Gopal, E. M. Gauger, Ahsan Nazir, B. W. Lovett, A. M. Fox, M. S. Skolnick

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We report experimental evidence identifying acoustic phonons as the principal source of the excitation-induced-dephasing (EID) responsible for the intensity damping of quantum dot excitonic Rabi rotations. The rate of EID is extracted from temperature dependent Rabi rotation measurements of the ground-state excitonic transition, and is found to be in close quantitative agreement with an acoustic-phonon model.

Original languageEnglish
Article number017402
Number of pages4
JournalPhysical Review Letters
Issue number1
Publication statusPublished - 8 Jan 2010

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