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Fluctuation induced luminescence sidebands in the emission spectra of resonantly driven quantum dots

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arxiv 1207.6952 v1 pith:WMXFH2AH submitted 2012-07-30 cond-mat.mes-hall

Fluctuation induced luminescence sidebands in the emission spectra of resonantly driven quantum dots

classification cond-mat.mes-hall
keywords quantumfluctuationdescribedotsemissioneventsinducedluminescence
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We describe how complex fluctuations of the local environment of an optically active quantum dot can leave rich fingerprints in its emission spectrum. A new feature, termed "Fluctuation Induced Luminescence" (FIL), is observed to arise from extremely rare fluctuation events that have a dramatic impact on the response of the system-so called "black swan" events. A quantum dissipative master equation formalism is developed to describe this effect phenomenologically. Experiments performed on single quantum dots subject to electrical noise show excellent agreement with our theory, producing the characteristic FIL sidebands.

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