{"id":922406,"date":"2026-10-10T00:00:09","date_gmt":"2026-10-10T00:00:09","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/922406\/"},"modified":"2026-10-10T00:00:09","modified_gmt":"2026-10-10T00:00:09","slug":"university-of-auckland-nist-and-umd-demonstrate-octave-spanning-chip-scale-microcomb-in-nature","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/922406\/","title":{"rendered":"University of Auckland, NIST, and UMD Demonstrate Octave-Spanning Chip-Scale Microcomb in Nature"},"content":{"rendered":"

\"\"<\/a>Concept of self-aligned PDCS microcomb generation with octave-separated lasers.<\/p>\n

In a study published in Nature<\/a>, an international research collaboration led by the University of Auckland<\/a>, the National Institute of Standards and Technology (NIST)<\/a>, the University of Maryland (UMD)<\/a>, and UC Santa Barbara<\/a> has demonstrated a chip-integrated optical frequency comb that overcomes long-standing stability and control limits in microcomb metrology. By inverting traditional frequency comb architectures, the team generated a self-aligned, octave-spanning microcomb operating on a single foundry-fabricated photonic chip, establishing a scalable hardware foundation for deployable optical atomic clocks, GPS-denied quantum navigation, and precision quantum sensing.<\/p>\n

Traditional laboratory and chip-scale frequency combs generate a spectrum by cascading light outward from a single laser pump. On integrated photonic platforms, this method struggles to deliver strong, low-noise signals across an entire octave, making it difficult to detect and lock the carrier-envelope offset frequency (fCEO) required for absolute stabilization. The team\u2019s architectural inversion places two pump lasers an octave apart (spanning telecom to visible wavelengths) to drive a nonlinear \u03c7(3) microresonator. The interaction between the two octave-separated pumps induces a parametrically driven cavity soliton that automatically fills in the spectrum between the two boundaries, producing a stable, low-noise frequency ruler without complex external stabilization controls.<\/p>\n

[ Dual-Pump Microcomb Metrology Benchmarks & System Capabilities ]Metrology TaskExperimental Architecture & ExecutionOperational Impact & Target Application\u2022 Integrated Optical Clock Readout\u2022 Direct optical clock transition readout and phase-locking across octave boundaries.\u2022 Enables chip-scale, deployable optical atomic timekeeping for satellite-free navigation.\u2022 Optical Frequency Synthesis\u2022 Generates millions of precisely spaced optical frequencies from telecom to visible.\u2022 Precision optical metrology and multi-wavelength laser line synthesis on-chip.\u2022 Low-Noise mmWave Generation\u2022 Low-phase-noise beat note generation in the millimeter-wave domain.\u2022 Ultra-stable RF signal distribution, telecommunications synchronization, and sensing.<\/p>\n

Using the same self-aligned microcomb platform, the researchers successfully performed all three core benchmarks of optical frequency metrology using foundry-fabricated microresonator chips. The authors, including Professor Miro Erkintalo, Dr. Gr\u00e9gory Moille, and Dr. Kartik Srinivasan, have filed a provisional patent application based on the architecture to support commercialization across portable atomic timekeeping, defense navigation systems, and integrated quantum photonics.<\/p>\n

Review the peer-reviewed research paper in Nature here<\/a>, inspect institutional disclosures via the University of Auckland Newsroom here<\/a>, and examine scientific release details via EurekAlert here<\/a>.<\/p>\n

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Sign up for QCR Alerts<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Concept of self-aligned PDCS microcomb generation with octave-separated lasers. In a study published in Nature, an international research…\n","protected":false},"author":2,"featured_media":922407,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[64,63,105],"class_list":["post-922406","post","type-post","status-publish","format-standard","has-post-thumbnail","category-technology","tag-au","tag-australia","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/922406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/comments?post=922406"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/922406\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/922407"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=922406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=922406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=922406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}