Ultrafast Room Temperature Single-Photon Source from Nanowire-Quantum Dots - Archive ouverte HAL
Article Dans Une Revue Nano Letters Année : 2012

Ultrafast Room Temperature Single-Photon Source from Nanowire-Quantum Dots

Résumé

Epitaxial semiconductor quantum dots are particularly promising as realistic single-photon sources for their compatibility with manufacturing techniques and possibility to be implemented in compact devices. Here, we demonstrate for the first time single-photon emission up to room temperature from an epitaxial quantum dot inserted in a nanowire, namely a CdSe slice in a ZnSe nanowire. The exciton and biexciton lines can still be resolved at room temperature and the biexciton turns out to be the most appropriate transition for single-photon emission due to a large nonradiative decay of the bright exciton to dark exciton states. With an intrinsically short radiative decay time (approximate to 300 ps) this system is the fastest room temperature single-photon emitter, allowing potentially gigahertz repetition rates.
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Dates et versions

hal-00855923 , version 1 (30-08-2013)

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Samir Bounouar, Miryam Elouneg-Jamroz, Martien den Hertog, C. Morchutt, E. Bellet-Amalric, et al.. Ultrafast Room Temperature Single-Photon Source from Nanowire-Quantum Dots. Nano Letters, 2012, 12 (6), pp.2977. ⟨10.1021/nl300733f⟩. ⟨hal-00855923⟩
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