{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T14:53:29Z","timestamp":1781621609554,"version":"3.54.5"},"reference-count":24,"publisher":"Optica Publishing Group","issue":"13","license":[{"start":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T00:00:00Z","timestamp":1781568000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T00:00:00Z","timestamp":1781568000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"Fundamental Scientific Research Business\n\t\t\t\t\t\tExpense for Higher School of Heilongjiang\n\t\t\t\t\t\tProvince","award":["2022-KYYWF-1087"],"award-info":[{"award-number":["2022-KYYWF-1087"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,7,1]]},"abstract":"<jats:p>To overcome the spectral invisibility of bound states in the continuum\n\t\t\t\t\t(BICs) and the extreme linewidth constraints of exceptional points\n\t\t\t\t\t(EPs), this work proposes a novel, to the best of our knowledge,\n\t\t\t\t\tdesign strategy. Asymmetric rectangular holes are introduced into a\n\t\t\t\t\tsymmetry-protected BIC template to theoretically engineer a\n\t\t\t\t\tsecond-order EP with a tailored quality factor (approximately 10\u00b3).\n\t\t\t\t\tSystematic perturbation tests demonstrate that in the vicinity of the\n\t\t\t\t\tEP, the frequency splitting follows a square-root scaling\n\t\t\t\t\trelationship, with power-law exponents centered near 0.5. This\n\t\t\t\t\tuniversal square-root scaling, which stands in stark contrast to the\n\t\t\t\t\tquasi-linear response (with exponents clustering near 0.0) far from\n\t\t\t\t\tthe EP, confirms the singular sensitivity in the vicinity of the EP.\n\t\t\t\t\tOur work demonstrates a feasible approach to realizing and utilizing\n\t\t\t\t\tEPs in robust, passive photonic platforms, offering a potential\n\t\t\t\t\tpathway to bridge the gap between ideal BIC confinement and\n\t\t\t\t\tEP-enhanced sensing.<\/jats:p>","DOI":"10.1364\/ol.604447","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T12:00:13Z","timestamp":1779969613000},"page":"3505","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Engineering an exceptional point from a single bound state in the continuum via symmetry-breaking perturbations"],"prefix":"10.1364","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-8146-1993","authenticated-orcid":true,"given":"Shengyu","family":"Qu","sequence":"first","affiliation":[{"name":"Heilongjiang University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yang","family":"Gao","sequence":"additional","affiliation":[{"name":"Heilongjiang University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,6,16]]},"reference":[{"key":"ol-51-13-3505-R1","doi-asserted-by":"publisher","first-page":"249","DOI":"10.1080\/00018732.2021.1876991","type":"journal-article","volume":"69","author":"Ashida","year":"2020","journal-title":"Adv. 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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"}]}}