{"id":569496,"date":"2026-02-06T02:37:13","date_gmt":"2026-02-06T02:37:13","guid":{"rendered":"https:\/\/www.europesays.com\/us\/569496\/"},"modified":"2026-02-06T02:37:13","modified_gmt":"2026-02-06T02:37:13","slug":"china-achieves-tamper-proof-quantum-communication-over-100km-with-single-atoms","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/569496\/","title":{"rendered":"China achieves tamper-proof quantum communication over 100km with single atoms"},"content":{"rendered":"<p><a target=\"_self\" class=\"e1yy41x40 ef9u0v01 css-1ankfgb ecgc78b0\" href=\"https:\/\/www.scmp.com\/news\/china\/science?module=inline&amp;pgtype=article\" title=\"\" data-qa=\"BaseLink-renderAnchor-StyledAnchor\" rel=\"nofollow noopener\">Chinese researchers<\/a> have pushed the frontiers of quantum encryption, demonstrating a powerful new way to send secure information over more than 100km (62 miles) of optical fibre \u2013 without having to trust the equipment being used.A team led by <a target=\"_self\" class=\"e1yy41x40 ef9u0v01 css-1ankfgb ecgc78b0\" href=\"https:\/\/www.scmp.com\/news\/china\/science\/article\/3335238\/chinese-physicists-prove-einstein-wrong-and-put-century-old-debate-end?module=inline&amp;pgtype=article\" title=\"\" data-qa=\"BaseLink-renderAnchor-StyledAnchor\" rel=\"nofollow noopener\">Pan Jianwei<\/a> at the University of Science and Technology of China used a pair of individual rubidium atoms, trapped in laser beams at two separate network nodes, as the foundation for their system, according to a paper published in Science this week.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">The researchers created quantum links between the atoms using single light particles, or photons. By comparing the atoms\u2019 states at each end, the team generated identical strings of 0s and 1s \u2013 a shared secret key for encryption.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">What sets the experiment apart is that the approach, known as device-independent quantum key distribution (DI-QKD), would still work securely even if the devices were flawed or had been tampered with.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">The method derives its security from the quantum-mechanical behaviour of the entangled atoms, protecting against the real-world vulnerabilities that have long challenged quantum communication systems.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">DI-QKD had previously only been demonstrated over short distances in the laboratory, the researchers wrote, adding that their study helped to \u201cclose the gap between proof-of-principle experiments and real-world applications\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"Chinese researchers have pushed the frontiers of quantum encryption, demonstrating a powerful new way to send secure information&hellip;\n","protected":false},"author":3,"featured_media":569497,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[9710,74,22165,440,247046,153204,84672,492,247814,159,6043,247815,67,132,48141,84673,68],"class_list":{"0":"post-569496","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-physics","8":"tag-beijing","9":"tag-china","10":"tag-chinese","11":"tag-europe","12":"tag-national-security-agency","13":"tag-nsa","14":"tag-pan-jianwei","15":"tag-physics","16":"tag-qkd","17":"tag-science","18":"tag-shanghai","19":"tag-steve-rolston","20":"tag-united-states","21":"tag-unitedstates","22":"tag-university-of-maryland","23":"tag-university-of-science-and-technology-of-china","24":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/116021365585456987","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/569496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=569496"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/569496\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/569497"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=569496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=569496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=569496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}