Extraction of the homogeneous linewidth of the spectrally diffusing line of a CdSe/ZnSe quantum dot embedded in a nanowire

Samir Bounouar (1) , Aurélien Trichet (1) , Miryam Elouneg-Jamroz (1) , Régis André (1) , E. Bellet-Amalric (2) , Catherine Bougerol (1) , Martien den Hertog (3) , Kuntheak Kheng (2) , Serge Tatarenko (1) , Jean-Philippe Poizat (1)

1 NEEL - NPSC - Nanophysique et Semiconducteurs
2 NPSC - Nanophysique et Semiconducteurs
3 NEEL - MRS - Matériaux, Rayonnements, Structure

We present a simple method to extract the homogeneous linewidth of a single photon emitter line exhibiting fast (down to 1 ns) spectral diffusion (SD). It is based on a recently developed technique using photon correlation measurements on half of the line. Here we show that the SD induced bunching depends on the ratio between the width of the homogeneous line and the spectral diffusion amplitude. Using this technique on a CdSe/ZnSe quantum dot, we investigate the temperature dependence of its fast SD amplitude and its homogeneous excitonic linewidth

Mots clés: Spectral diffusion; quantum dot; spectroscopy

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Samir Bounouar, Aurélien Trichet, Miryam Elouneg-Jamroz, Régis André, E. Bellet-Amalric, et al.. Extraction of the homogeneous linewidth of the spectrally diffusing line of a CdSe/ZnSe quantum dot embedded in a nanowire. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 86, pp.085325. ⟨10.1103/PhysRevB.86.085325⟩. ⟨hal-00880529⟩