Linewidth broadening of a quantum dot coupled to an off-resonant cavity

Details Linewidth broadening of a quantum dot coupled to an off-resonant cavity Linewidth broadening of a quantum dot coupled to an off-resonant cavity

2010-03-11

arxiv.org/abs/1003.2350v1

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.82.045306

We study the coupling between a photonic crystal cavity and an off-resonant quantum dot under resonant excitation of the cavity or the quantum dot. Linewidths of the quantum dot and the cavity as a function of the excitation laser power are measured. We show that the linewidth of the quantum dot, measured by observing the cavity emission, is significantly broadened compared to the theoretical estimate. This indicates additional incoherent coupling between the quantum dot and the cavity.

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