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Effects of resonant-laser excitation on the emission properties in a single quantum dot



Sergey Polyakov, Vivien Loo, Edward Flagg, Glenn S. Solomon, Olivier Gazzano, Tobias Huber


While many solid-state emitters can be optically excited non-resonantly, resonant excitation is necessary for many quantum information protocols as it often maximizes the non-classicality of the emitted light. Here, we study the resonance fluorescence in a solid-state system-- a quantum dot--with the addition of weak, non-resonant light. In the inelastic scattering regime, changes in the resonance fluorescence intensity and linewidth are linked to both the non-resonant and resonant laser powers. Details of the intensity change indicate that charge-carrier loss from the quantum dot is resonant laser. As we enter the Mollow triplet regime, this resonant laser loss term rate is approximately 1/50 ns−1. This work further clarifies resonance fluorescence in solid-state systems and will aid in the further improvement of solid-state non-classical light sources.


Quantum dots, Fluorescence, Spectroscopy


Polyakov, S. , Loo, V. , Flagg, E. , Solomon, G. , Gazzano, O. and Huber, T. (2018), Effects of resonant-laser excitation on the emission properties in a single quantum dot, Optica, [online],, (Accessed February 29, 2024)
Created March 27, 2018, Updated May 3, 2021