ArticleACS nano2026
Engineering Nanohole-Etched Quantum Dots for Telecom-Band Single-Photon Generation.
Article in ACS nano, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Controlled Growth of Rare-Earth-Doped TiOACS applied optical materials · 2026Article
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8 authors.
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Abstract
Bright and high-purity single-photon sources at telecom wavelengths are essential for scalable quantum networks. Nanohole-etched GaSb/AlGaSb quantum dots (QDs) are an emerging platform for telecom-band emitters, offering freedom from strain-induced decoherence and indium-related nuclear spin noise of conventional InGaAs QDs. Here, we present a comprehensive optical spectroscopy study that reveals correlations between nanohole morphology, exciton recombination dynamics, and single-photon performance in GaSb QDs. Shallow nanoholes lead to ultrafast charge transfer that limits optical coherence, whereas deeper nanoholes yield clean neutral-exciton emission with a high bright-to-dark state branching ratio (98 ± 1%), indicating favorable conditions for efficient photon generation. Under pulsed quasi-resonant excitation, these QDs exhibit significantly enhanced single-photon purity with
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