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Optimization of the efficiency of single-photon sources based on quantum dots under optical excitation
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- Malko, A. (author)
- Ecole Polytechnique Fédérale de Lausanne
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- Baier, M.H. (author)
- Ecole Polytechnique Fédérale de Lausanne
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- Karlsson, Fredrik, 1974- (author)
- Ecole Polytechnique Fédérale de Lausanne
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- AIP Publishing, 2006
- 2006
- English.
- In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 88, s. 081905-
- Journal article (peer-reviewed)
Abstract
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- 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
Keyword
- NATURAL SCIENCES
- NATURVETENSKAP
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- art (subject category)
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- Oberli, D.Y.
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- Linköping University
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