{"id":162282,"date":"2025-06-06T06:49:08","date_gmt":"2025-06-06T06:49:08","guid":{"rendered":"https:\/\/www.europesays.com\/uk\/162282\/"},"modified":"2025-06-06T06:49:08","modified_gmt":"2025-06-06T06:49:08","slug":"china-scientists-put-direct-quantum-communications-tech-to-test-in-space-flight","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/uk\/162282\/","title":{"rendered":"China scientists put direct quantum communications tech to test in space flight"},"content":{"rendered":"<p>A laser module and a phase encoding device, developed at the Beijing Academy of Quantum Information Sciences, were on board a Yuanxingzhe-1 <a target=\"_self\" class=\"e1yy41x40 ef9u0v01 css-1ankfgb ecgc78b0\" href=\"https:\/\/www.scmp.com\/topics\/chinas-space-programme?module=inline&amp;pgtype=article\" title=\"\" data-qa=\"BaseLink-renderAnchor-StyledAnchor\" rel=\"noopener\">rocket<\/a> that reached 2.5km (1.55 miles) during a two-minute vertical flight testing its reusability last Thursday.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">\u201cThe launch mainly tested the robustness of the modules against various environmental stresses encountered during rocket ascent, such as vibration and radiation,\u201d the academy said on its official social media account on Wednesday.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">The test marked a key step in China\u2019s transition from experimental validation to the construction of a fully integrated space-air-ground quantum secure direct communication (QSDC) network, the academy added.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">First proposed by Chinese physicists in 2002, QSDC is considered complementary to another form of quantum secure communication, known as quantum key distribution (QKD).<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">While QKD involves generating encryption keys for use over conventional communication channels, QSDC skips the key-sharing step and sends the actual message directly through a quantum channel.<\/p>\n<p datatype=\"p\" data-qa=\"Component-Component\" class=\"e8zc9q40 css-1c6uqr6 ec74h0k1\">This makes the system more efficient and, in principle, more secure, which has led to some experts referring to QSDC as the \u201cultimate form\u201d of secure communication.<\/p>\n","protected":false},"excerpt":{"rendered":"A laser module and a phase encoding device, developed at the Beijing Academy of Quantum Information Sciences, were&hellip;\n","protected":false},"author":2,"featured_media":162283,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3844],"tags":[68318,1395,68317,52061,68320,29014,29687,70,68316,10741,413,16,15,44067,68319],"class_list":{"0":"post-162282","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-space","8":"tag-beijing-academy-of-quantum-information-sciences","9":"tag-china","10":"tag-chinese-physicists","11":"tag-qkd","12":"tag-qsdc","13":"tag-quantum-communication","14":"tag-quantum-key-distribution","15":"tag-science","16":"tag-science-bulletin","17":"tag-shanghai","18":"tag-space","19":"tag-uk","20":"tag-united-kingdom","21":"tag-xinhua","22":"tag-yuanxingzhe-1-rocket"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@uk\/114635090502428919","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts\/162282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/comments?post=162282"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/posts\/162282\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/media\/162283"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/media?parent=162282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/categories?post=162282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/uk\/wp-json\/wp\/v2\/tags?post=162282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}