Highly efficient triggered emission of single photons by colloidal CdSe∕ZnS nanocrystals

Autor:	Xavier Brokmann, Elisabeth Giacobino, J.-P. Hermier, Maxime Dahan
Rok vydání:	2004
Předmět:	Photon Photon antibunching Materials science Physics and Astronomy (miscellaneous) business.industry Physics::Optics Fluorescence intermittency Colloidal crystal Fluorescence Condensed Matter::Materials Science Quantum dot Excited state Optoelectronics business Excitation
Zdroj:	Applied Physics Letters. 85:712-714
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1775280
Popis:	We demonstrate the realization of a highly efficient triggered source of single photons emitted by colloidal CdSe∕ZnS nanocrystals at room temperature. Under pulsed excitation, the fluorescence of single nanocrystals excited close to saturation exhibits a perfect antibunching and the probability to detect a single emitted photon per excitation pulse reaches 3%, comparable to the best values reported for other emitters. Without any correction, the probability of simultaneously emitting two photons is 25 times lower than for a faint pulsed laser. Combined with recent reports on the reduction of fluorescence intermittency, these results indicate that CdSe∕ZnS nanocrystals are promising single-photon sources.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7ac02c22aa9c0f58712c375d89cd00b1 https://doi.org/10.1063/1.1775280 Zobrazit plný text záznamu