Optimization of the efficiency of single-photon sources based on quantum dots under optical excitation
2006 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 88, 081905- p.Article in journal (Refereed) Published
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 CategoryNatural Sciences
IdentifiersURN: urn:nbn:se:liu:diva-44033DOI: 10.1063/1.2177547Local ID: 75467OAI: oai:DiVA.org:liu-44033DiVA: diva2:264894