{"id":464037,"date":"2026-03-08T09:57:08","date_gmt":"2026-03-08T09:57:08","guid":{"rendered":"https:\/\/www.newsbeep.com\/uk\/464037\/"},"modified":"2026-03-08T09:57:08","modified_gmt":"2026-03-08T09:57:08","slug":"quantum-tech-breakthrough-chinas-double-photon-device-breaks-efficiency-ceiling","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/uk\/464037\/","title":{"rendered":"Quantum tech breakthrough: China\u2019s double-photon device breaks efficiency ceiling"},"content":{"rendered":"

Chinese scientists<\/a> have cracked a long-standing puzzle in quantum optics<\/a>, creating a tiny device that spits out pairs of light particles on demand with unprecedented purity and efficiency \u2013 with potential implications for the quantum race.Single-photon devices are maturing rapidly, but the field is now pursuing efficient two-photon sources that can pave the way for sharper medical imaging, unbreakable encryption<\/a> and next-generation sensors. In precision measurement, for instance, using two photons can double the spatial resolution compared with a single photon.<\/p>\n

The challenge with traditional quantum dots \u2013 tiny structures often called \u201cartificial atoms\u201d \u2013 is that getting them to emit just two photons at a time is like trying to balance two marbles on a needle. Now, a team of researchers from Beijing has found a way that delivers exceptionally strong two-photon efficiency.<\/p>\n

Under pulsed excitation conditions \u2013 the process of applying a brief, intense force or impulse to a structure \u2013 their new emitter can achieve 98.3 per cent of emitted photons appearing in paired form, with a generation efficiency of 29.9 per cent. Such results represent the \u201cinternational best-in-class\u201d of its kind, according to its lead researcher.<\/p>\n

The advance, unveiled this week in Nature Materials, comes from a team at the Beijing Academy of Quantum Information Sciences led by chief scientist Yuan Zhiliang, in collaboration with researchers from the Chinese Academy of Sciences\u2019 Institute of Semiconductors.<\/p>\n

In a research briefing in the same journal, Ding Fei, a scientist from Leibniz University in Germany, wrote that he was \u201ctruly impressed by the result\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"Chinese scientists have cracked a long-standing puzzle in quantum optics, creating a tiny device that spits out pairs…\n","protected":false},"author":2,"featured_media":464038,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[5713,166468,6110,166472,145,166473,166470,166469,2302,28307,30253,90,56,54,55,166471],"class_list":["post-464037","post","type-post","status-publish","format-standard","has-post-thumbnail","category-physics","tag-beijing","tag-beijing-academy-of-quantum-information-sciences","tag-chinese-academy-of-sciences","tag-ding-fei","tag-germany","tag-institute-of-semiconductors","tag-leibniz-university","tag-nature-materials","tag-physics","tag-quantum-dots","tag-quantum-optics","tag-science","tag-uk","tag-united-kingdom","tag-unitedkingdom","tag-yuan-zhiliang"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/464037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/comments?post=464037"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/posts\/464037\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media\/464038"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/media?parent=464037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/categories?post=464037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/uk\/wp-json\/wp\/v2\/tags?post=464037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}