title: Phonon-induced Rabi-frequency renormalization of optically driven single InGaAs/GaAs quantum dots.
abstract: We study optically driven Rabi rotations of a quantum dot exciton transition between 5 and 50 K, and for pulse areas of up to 14π. 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.
authors.affiliation: Department of Physics and Astronomy, University of Sheffield, United Kingdom. a.j.ramsay@shef.ac.uk
authors.forename: A J
authors.initials: AJ
authors.lastname: Ramsay
authors.forename: T M
authors.initials: TM
authors.lastname: Godden
authors.forename: S J
authors.initials: SJ
authors.lastname: Boyle
authors.forename: E M
authors.initials: EM
authors.lastname: Gauger
authors.forename: A
authors.initials: A
authors.lastname: Nazir
authors.forename: B W
authors.initials: BW
authors.lastname: Lovett
authors.forename: A M
authors.initials: AM
authors.lastname: Fox
authors.forename: M S
authors.initials: MS
authors.lastname: Skolnick