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Updated: Jun 5, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Phonon-induced Rabi-frequency renormalization of optically driven single InGaAs/GaAs quantum dots
A J Ramsay1, T M Godden, S J Boyle
1Department of Physics and Astronomy, University of Sheffield, United Kingdom. a.j.ramsay@shef.ac.uk
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.
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