{"id":212689,"date":"2025-04-29T01:33:23","date_gmt":"2025-04-29T06:33:23","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/04\/compact-optical-clock-uses-quantum-interference-for-improved-frequency-stability"},"modified":"2025-04-29T01:33:23","modified_gmt":"2025-04-29T06:33:23","slug":"compact-optical-clock-uses-quantum-interference-for-improved-frequency-stability","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/04\/compact-optical-clock-uses-quantum-interference-for-improved-frequency-stability","title":{"rendered":"Compact optical clock uses quantum interference for improved frequency stability"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/compact-optical-clock-uses-quantum-interference-for-improved-frequency-stability2.jpg\"><\/a><\/p>\n<p>An atomic clock research team from the National Time Service Center of the Chinese Academy of Sciences has proposed and implemented a compact optical clock based on quantum interference enhanced absorption spectroscopy, which is expected to play an important role in micro-positioning, navigation, timing (\u03bcPNT) and other systems.<\/p>\n<p>Inspired by the successful history of the coherent population trapping (CPT)-based chip-scale microwave atomic clock and the booming of optical microcombs, a chip-scale optical clock was also proposed and demonstrated with better frequency stability and accuracy, which is mainly based on two-photon transition of Rubidium atom ensemble.<\/p>\n<p>However, the typically required high cell temperatures (~100 \u2103) and laser powers (~10 mW) in such a configuration are not compliant with the advent of a fully miniaturized and <a href=\"https:\/\/phys.org\/tags\/low-power\/\" rel=\"tag\" class=\"\">low-power<\/a> optical clock.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An atomic clock research team from the National Time Service Center of the Chinese Academy of Sciences has proposed and implemented a compact optical clock based on quantum interference enhanced absorption spectroscopy, which is expected to play an important role in micro-positioning, navigation, timing (\u03bcPNT) and other systems. Inspired by the successful history of the [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,48,1617],"tags":[],"class_list":["post-212689","post","type-post","status-publish","format-standard","hentry","category-computing","category-particle-physics","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/212689","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=212689"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/212689\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=212689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=212689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=212689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}