{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T16:33:42Z","timestamp":1785429222015,"version":"3.56.0"},"reference-count":21,"publisher":"Optica Publishing Group","issue":"8","license":[{"start":{"date-parts":[[2027,4,14]],"date-time":"2027-04-14T00:00:00Z","timestamp":1807660800000},"content-version":"am","delay-in-days":365,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#AM"},{"start":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T00:00:00Z","timestamp":1776124800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/100000183","name":"United States Army Research\n\t\t\t\t\t\tOffice","doi-asserted-by":"crossref","award":["W911NF2310179"],"award-info":[{"award-number":["W911NF2310179"]}],"id":[{"id":"10.13039\/100000183","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/05epdh915","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"U.S. National Science\n\t\t\t\t\t\tFoundation","doi-asserted-by":"crossref","award":["2016244"],"award-info":[{"award-number":["2016244"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"crossref"},{"id":"https:\/\/ror.org\/021nxhr62","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,4,15]]},"abstract":"<jats:p>\n                    Photonic integrated resonators can be used for laser stabilization and\n\t\t\t\t\tdisciplining light to atomic transitions. Such integrated structures\n\t\t\t\t\thold the potential to augment or replace table-top reference cavities,\n\t\t\t\t\timprove the robustness, lower the cost, and enable portability of\n\t\t\t\t\tprecision applications such as atomic quantum sensing and computing,\n\t\t\t\t\toptical clocks, and ultra-low noise microwave generation. Realizing\n\t\t\t\t\tresonators that can span an octave of optical bandwidth will enable\n\t\t\t\t\tstabilization across a wide range of atomic species, quantum\n\t\t\t\t\tarchitectures, and precision metrology tools. Examples include\n\t\t\t\t\tsecond-harmonic generation, dual-comb line stabilization, and\n\t\t\t\t\tstability transfer of atomic-disciplined lasers to other lasers\n\t\t\t\t\toperating across large optical bandwidths for applications such as\n\t\t\t\t\tRydberg sensing. Here, we present an octave-spanning\n\t\t\t\t\tphotonic-integrated silicon nitride 4-meter-coil resonator that\n\t\t\t\t\toperates from 780\u2009nm to 1560\u2009nm. The 4-m coil resonator, based on a\n\t\t\t\t\ttunable bus-ring coupler design, provides a spectral resolution of\n\t\t\t\t\t47\u2009MHz over the octave span with intrinsic quality factors\n\t\t\t\t\t(Q\n                    <jats:sub>in<\/jats:sub>\n                    ) from 24 to 77 million over the octave bandwidth. With\n\t\t\t\t\tthe same coil resonator, we demonstrate stabilization of lasers\n\t\t\t\t\toperating at 780\u2009nm, 1320\u2009nm, 1550\u2009nm, and 1560\u2009nm, achieving greater\n\t\t\t\t\tthan 2 orders of magnitude frequency noise reduction within the\n\t\t\t\t\t1\u201310\u2009kHz offset range and thermorefractive noise-limited performance\n\t\t\t\t\tbetween 1\u2009kHz and 10\u2009kHz at 1320\u2009nm, 1550\u2009nm, and 1560\u2009nm.\n\t\t\t\t\tAdditionally, we demonstrate linewidth stabilization that lowers the\n\t\t\t\t\t1560\u2009nm, 1550\u2009nm, 1320\u2009nm, and 780\u2009nm 1\/\u03c0 reverse integral linewidths\n\t\t\t\t\t(ILW) by an order of magnitude to 159\u2009Hz, 250\u2009Hz, 289\u2009Hz, and 1\u2009kHz,\n\t\t\t\t\trespectively. The resonator is fabricated in the CMOS-compatible\n\t\t\t\t\tsilicon nitride platform that supports a wide range of active and\n\t\t\t\t\tpassive components, unlocking the potential to integrate precision and\n\t\t\t\t\tquantum systems on-chip.\n                  <\/jats:p>","DOI":"10.1364\/ol.591286","type":"journal-article","created":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T13:00:10Z","timestamp":1774875610000},"page":"2304","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Octave-spanning operation of a photonic integrated coil resonator as a reference cavity"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5366-1541","authenticated-orcid":true,"given":"Andrew S.","family":"Hunter","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1360-9646","authenticated-orcid":true,"given":"Kaikai","family":"Liu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4290-6671","authenticated-orcid":true,"given":"Meiting","family":"Song","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark W.","family":"Harrington","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5373-4396","authenticated-orcid":true,"given":"Andrei","family":"Isichenko","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-0513-7216","authenticated-orcid":true,"given":"Rahul","family":"Chawlani","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4067-286X","authenticated-orcid":true,"given":"Nick","family":"Montifiore","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuan","family":"Zhong","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karl D.","family":"Nelson","sequence":"additional","affiliation":[{"name":"Honeywell Aerospace Technologies"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1735-7220","authenticated-orcid":true,"given":"Daniel J.","family":"Blumenthal","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02t274463","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,4,14]]},"reference":[{"key":"ol-51-8-2304-R1","doi-asserted-by":"publisher","first-page":"325","DOI":"10.1126\/science.256.5055.325","type":"journal-article","volume":"256","author":"Abramovici","year":"1992","journal-title":"Science"},{"key":"ol-51-8-2304-R2","doi-asserted-by":"publisher","first-page":"49","DOI":"10.1038\/s43246-025-00770-x","type":"journal-article","volume":"6","author":"Katsumi","year":"2025","journal-title":"Commun.\n\t\t\t\t\tMater."},{"key":"ol-51-8-2304-R3","doi-asserted-by":"publisher","first-page":"876","DOI":"10.1038\/s41586-025-08820-7","type":"journal-article","volume":"641","author":"Alexander","year":"2025","journal-title":"Nature"},{"key":"ol-51-8-2304-R4","doi-asserted-by":"publisher","first-page":"083002","DOI":"10.1088\/2040-8978\/18\/8\/083002","type":"journal-article","volume":"18","author":"Orieux","year":"2016","journal-title":"J. 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Lett."},{"key":"ol-51-8-2304-R10","doi-asserted-by":"publisher","first-page":"2209","DOI":"10.1109\/JPROC.2018.2861576","type":"journal-article","volume":"106","author":"Blumenthal","year":"2018","journal-title":"Proc. IEEE"},{"key":"ol-51-8-2304-R11","doi-asserted-by":"publisher","first-page":"597","DOI":"10.1038\/nphoton.2013.183","type":"journal-article","volume":"7","author":"Moss","year":"2013","journal-title":"Nat.\n\t\t\t\t\tPhoton."},{"key":"ol-51-8-2304-R13","doi-asserted-by":"publisher","first-page":"eado9570","DOI":"10.1126\/sciadv.ado9570","type":"journal-article","volume":"10","author":"He","year":"2024","journal-title":"Sci. Adv."},{"key":"ol-51-8-2304-R14","doi-asserted-by":"publisher","first-page":"4737","DOI":"10.1364\/OL.44.004737","type":"journal-article","volume":"44","author":"Moille","year":"2019","journal-title":"Opt. 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Rep."}],"container-title":["Optics Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/opg.optica.org\/viewmedia.cfm?URI=ol-51-8-2304&am=y","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/opg.optica.org\/viewmedia.cfm?URI=ol-51-8-2304&seq=0","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T14:40:26Z","timestamp":1778683226000},"score":1,"resource":{"primary":{"URL":"https:\/\/opg.optica.org\/abstract.cfm?URI=ol-51-8-2304"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,4,14]]},"references-count":21,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2026]]},"published-print":{"date-parts":[[2026]]}},"URL":"https:\/\/doi.org\/10.1364\/ol.591286","relation":{},"ISSN":["0146-9592","1539-4794"],"issn-type":[{"value":"0146-9592","type":"print"},{"value":"1539-4794","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,4,14]]},"assertion":[{"value":"Optica Publishing Group","name":"publisher","label":"This article is maintained by"},{"value":"https:\/\/doi.org\/10.1364\/OL.591286","name":"articlelink","label":"Crossref DOI link to publisher maintained version"},{"value":"letter","name":"content_type","label":"Article type"},{"value":"Screened by Similarity Check","name":"cross_check","label":"Similarity check"},{"value":"Yes","order":0,"name":"peer_reviewed","label":"Peer reviewed","group":{"name":"peer_review","label":"Peer review"}},{"value":"Single blind","order":1,"name":"review_process","label":"Review process","group":{"name":"peer_review","label":"Peer review"}},{"value":"30 December 2025","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"24 March 2026","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"14 April 2026","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}},{"value":"\u00a9 2026 Optica Publishing Group. All rights, including\n\t\t\t\t\tfor text and data mining (TDM), Artificial Intelligence (AI) training,\n\t\t\t\t\tand similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}