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Phonon-induced rabi-frequency renormalization of optically driven single InGaAs/GaAs quantum dots

Ramsay, A.J., Godden, T.M., Boyle, S.J., Gauger, E.M., Nazir, A., Lovett, B.W., Fox, A.M. and Skolnick, M.S. (2010) Phonon-induced rabi-frequency renormalization of optically driven single InGaAs/GaAs quantum dots. Physical Review Letters (PRL), 105 (17). Art no.177402 . ISSN 0031-9007

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We study optically driven Rabi rotations of a quantum dot exciton transition between 5 and 50 K, and for pulse areas of up to 14 pi. In a high driving field regime, the decay of the Rabi rotations is nonmonotonic, and the period decreases with pulse area and increases with temperature. By comparing the experiments to a weak-coupling model of the exciton-phonon interaction, we demonstrate that the observed renormalization of the Rabi frequency is induced by fluctuations in the bath of longitudinal acoustic phonons, an effect that is a phonon analogy of the Lamb shift.

Item Type: Article
Copyright, Publisher and Additional Information: © 2010 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review Letters. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Dynamics; System
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 12 Nov 2010 10:36
Last Modified: 08 Feb 2013 17:29
Published Version: http://dx.doi.org/10.1103/PhysRevLett.105.177402
Status: Published
Publisher: American Physical Society
Refereed: Yes
Identification Number: 10.1103/PhysRevLett.105.177402
URI: http://eprints.whiterose.ac.uk/id/eprint/42638

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