{"id":217529,"date":"2025-07-10T01:26:43","date_gmt":"2025-07-10T06:26:43","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/07\/keeping-the-photon-in-the-dark-a-new-method-for-full-control-of-quantum-dots"},"modified":"2025-07-10T01:26:43","modified_gmt":"2025-07-10T06:26:43","slug":"keeping-the-photon-in-the-dark-a-new-method-for-full-control-of-quantum-dots","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/07\/keeping-the-photon-in-the-dark-a-new-method-for-full-control-of-quantum-dots","title":{"rendered":"Keeping the photon in the dark: A new method for full control of quantum dots"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/keeping-the-photon-in-the-dark-a-new-method-for-full-control-of-quantum-dots.jpg\"><\/a><\/p>\n<p>Excitons\u2014bound pairs of electrons and an electron hole\u2014are quasiparticles that can arise in solids. While so-called \u201cbright\u201d excitons emit light and are therefore accessible, dark excitons are optically inactive. As a result, they have a significantly longer lifetime\u2014which makes them ideal for storing and controlling quantum states and using them for advanced methods to generate entanglement.<\/p>\n<p>Gregor Weihs and his team from the Department of Experimental Physics at the University of Innsbruck, together with researchers in Dortmund, Bayreuth, and Linz, have now demonstrated a versatile method that can be used to control dark excitons in <a href=\"https:\/\/phys.org\/tags\/semiconductor+quantum+dots\/\" rel=\"tag\" class=\"\">semiconductor quantum dots<\/a>.<\/p>\n<p>The work is <a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adu4261\" target=\"_blank\">published<\/a> in Science Advances.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Excitons\u2014bound pairs of electrons and an electron hole\u2014are quasiparticles that can arise in solids. While so-called \u201cbright\u201d excitons emit light and are therefore accessible, dark excitons are optically inactive. As a result, they have a significantly longer lifetime\u2014which makes them ideal for storing and controlling quantum states and using them for advanced methods to generate [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1617],"tags":[],"class_list":["post-217529","post","type-post","status-publish","format-standard","hentry","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/217529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=217529"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/217529\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=217529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=217529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=217529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}