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Optimization of the efficiency of single-photon sources based on quantum dots under optical excitation
Ecole Polytechnique Fédérale de Lausanne.
Ecole Polytechnique Fédérale de Lausanne.
Ecole Polytechnique Fédérale de Lausanne.ORCID iD: 0000-0002-4547-6673
Ecole Polytechnique Fédérale de Lausanne.
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2006 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 88, 081905- p.Article in journal (Refereed) Published
Abstract [en]

We demonstrate efficient, regulated single-photon operation from site-controlled InGaAs quantum dots (QDs) grown on a prepatterned substrate. Under nonresonant optical excitation, carriers trapped at structural or compositional defects of the adjacent nanostructures led to a degradation of the single-photon statistics from a QD. When the QD was excited quasiresonantly, single photons were emitted and a nearly complete suppression of multiphoton emission was achieved, making these QDs promising candidates for effective solid-state single-photon sources

Place, publisher, year, edition, pages
2006. Vol. 88, 081905- p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-44033DOI: 10.1063/1.2177547Local ID: 75467OAI: diva2:264894
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2015-01-23

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Karlsson, Fredrik
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Applied Physics Letters
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