{"id":460,"date":"2026-01-15T16:21:51","date_gmt":"2026-01-15T16:21:51","guid":{"rendered":"https:\/\/sites.ifi.unicamp.br\/lpcm\/?p=460"},"modified":"2026-01-15T16:30:29","modified_gmt":"2026-01-15T16:30:29","slug":"new-article-in-nano-letters","status":"publish","type":"post","link":"https:\/\/sites.ifi.unicamp.br\/lpcm\/2026\/01\/15\/new-article-in-nano-letters\/","title":{"rendered":"New article in &#8220;Nano Letters&#8221;"},"content":{"rendered":"<p><strong>Low-Density InGaAs\/AlGaAs Quantum Dots in Droplet-Etched Nanoholes<\/strong><br \/>\n<img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/sites.ifi.unicamp.br\/lpcm\/files\/2026\/01\/nl5c04426_006.png\" alt=\"\" width=\"500\" height=\"270\" class=\"alignright size-full wp-image-461\" srcset=\"https:\/\/sites.ifi.unicamp.br\/lpcm\/files\/2026\/01\/nl5c04426_006.png 500w, https:\/\/sites.ifi.unicamp.br\/lpcm\/files\/2026\/01\/nl5c04426_006-300x162.png 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Over the past two decades, epitaxial semiconductor quantum dots (QDs) have demonstrated very promising properties as sources of single and entangled photons on-demand. Among different growth methods, droplet etching epitaxy has allowed the growth of almost strain-free QDs, with low and controllable surface densities, small excitonic fine structure splitting (FSS), and fast radiative decays. Here, we extend the technique to In(Ga)As QDs in AlGaAs, thereby increasing the achievable emission wavelength range beyond that accessible to GaAs\/AlGaAs QDs while preserving some of the key advantages of this growth method. We observe QD densities of \u223c0.25\u2009\u03bcm\u20132, FSS values as small as 3\u2009\u03bceV, and short radiative lifetimes of \u223c300\u2009ps, while extending the achievable emission wavelength to \u223c900 nm at cryogenic temperatures. We envision these QDs to be particularly suitable for integrated quantum photonics applications.<\/p>\n<p>Saimon F. Covre Da Silva, Ailton J. Garcia Jr., Maximilian Aigner, Christian Weidinger, Tobias M. Krieger, Gabriel Undeutsch, Christoph Deneke, Ishrat Bashir, Santanu Manna, Melina Peter, Ievgen Brytavskyi, Johannes Aberl, Armando Rastelli<\/p>\n<p>Nano Lett. 2026<br \/>\nDOI: <a href=\"https:\/\/doi.org\/10.1021\/acs.nanolett.5c04426\">10.1021\/acs.nanolett.5c04426<\/a><\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Low-Density InGaAs\/AlGaAs Quantum Dots in Droplet-Etched Nanoholes Over the past two decades, epitaxial semiconductor quantum dots (QDs) have demonstrated very promising properties as sources of single and entangled photons on-demand. Among different growth methods, droplet etching epitaxy has allowed the growth of almost strain-free QDs, with low and controllable surface densities, small excitonic fine structure &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/sites.ifi.unicamp.br\/lpcm\/2026\/01\/15\/new-article-in-nano-letters\/\">Continue reading<\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":169,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-460","post","type-post","status-publish","format-standard","hentry","category-publications","item-wrap"],"_links":{"self":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/posts\/460","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/users\/169"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/comments?post=460"}],"version-history":[{"count":2,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/posts\/460\/revisions"}],"predecessor-version":[{"id":463,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/posts\/460\/revisions\/463"}],"wp:attachment":[{"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/media?parent=460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/categories?post=460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.ifi.unicamp.br\/lpcm\/wp-json\/wp\/v2\/tags?post=460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}