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Updated: May 10, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Model of the optical emission of a driven semiconductor quantum dot: phonon-enhanced coherent scattering and
Dara P S McCutcheon1, Ahsan Nazir
1Departamento de Física, FCEyN, UBA and IFIBA, Conicet, Pabellón I, Ciudad Universitaria, 1428 Buenos Aires, Argentina. daramcc@df.uba.ar
Abstract:
We study the crucial role played by the solid-state environment in determining the photon emission characteristics of a driven quantum dot. For resonant driving, we predict a phonon enhancement of the coherently emitted radiation field with increasing driving strength, in stark contrast to the conventional expectation of a rapidly decreasing fraction of coherent emission with stronger driving. This surprising behavior results from thermalization of the dot with respect to the phonon bath and leads to a nonstandard regime of resonance fluorescence in which significant coherent scattering and the Mollow triplet coexist. Off resonance, we show that despite the phonon influence, narrowing of dot spectral sideband widths can occur in certain regimes, consistent with an experimental trend.
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