{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T16:37:02Z","timestamp":1786552622689,"version":"build-2736575974"},"reference-count":17,"publisher":"Optica Publishing Group","issue":"16","license":[{"start":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T00:00:00Z","timestamp":1786492800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T00:00:00Z","timestamp":1786492800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["LQN26A040004"],"award-info":[{"award-number":["LQN26A040004"]}]},{"name":"Zhejiang Provincial Natural Science Foundation of China","award":["LD25A040001"],"award-info":[{"award-number":["LD25A040001"]}]},{"name":"National Key Research and Development Program of China","award":["2023YFF0718400"],"award-info":[{"award-number":["2023YFF0718400"]}]},{"name":"\u201cPioneer\u201d and \u201cLeading Goose\u201d R&D Program of Zhejiang Province","award":["2025C01041"],"award-info":[{"award-number":["2025C01041"]}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,8,15]]},"abstract":"<jats:p>\n                    Negatively charged boron vacancy (\n                    <jats:italic>V<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    ) centers in hexagonal boron nitride (\n                    <jats:italic>h<\/jats:italic>\n                    -BN) has attracted considerable research attention due to its potential for\n                    <jats:italic>in situ<\/jats:italic>\n                    quantum sensing. However, the inherently low quantum efficiency significantly limits the sensitivity of\n                    <jats:italic>V<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    centers, which primarily arises from the low fluorescence emission suppressed by strong non-radiative recombination channels. To address this issue, here we propose and design a novel, to the best of our knowledge, nanowire (NW)-based hybrid cavity to enhance the fluorescence emission of\n                    <jats:italic>V<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    centers through both the Purcell effect and strong optical confinement. This hybrid cavity comprises an Al NW embedded within a TiO\n                    <jats:sub>2<\/jats:sub>\n                    matrix layer covered by a few-layer\n                    <jats:italic>h<\/jats:italic>\n                    -BN flake on top. The emissivity of the optimized hybrid cavity theoretically achieves a 33-fold improvement compared with that of a conventional plasmonic scheme. To fully understand this enhancement, we also systematically simulate and reveal multiple optical confinement mechanisms, including the intrinsic absorption of Al that naturally matches well with the photoluminescence features of\n                    <jats:italic>V<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    centers, plasmonic effects, and the Fabry\u2013Perot (FP) resonance induced by the Z-direction waveguiding property of the NW. Our work theoretically provides a promising plasmonic scheme to address the fluorescence limitations of\n                    <jats:italic>V<\/jats:italic>\n                    <jats:sub>\n                      <jats:italic>B<\/jats:italic>\n                    <\/jats:sub>\n                    <jats:sup>\u2212<\/jats:sup>\n                    centers and extends the practical applications of the Al NW-based plasmonic method to spin-based quantum sensing.\n                  <\/jats:p>","DOI":"10.1364\/ol.606049","type":"journal-article","created":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T17:00:10Z","timestamp":1785344410000},"page":"4661","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Plasmonic fluorescence enhancement of boron vacancy centers in h-BN with TiO\n                    <sub>2<\/sub>\n                    -Al nanowire hybrid cavities: a simulation study"],"prefix":"10.1364","volume":"51","author":[{"given":"Yuxin","family":"Jiang","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05v1y0t93","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3038-5207","authenticated-orcid":true,"given":"Feifei","family":"Zhou","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05v1y0t93","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuzhe","family":"Yang","sequence":"additional","affiliation":[{"name":"Nanyang Technological University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongwei","family":"Chen","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05v1y0t93","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinqing","family":"Wang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05v1y0t93","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,8,12]]},"reference":[{"key":"ol-51-16-4661-R1","doi-asserted-by":"publisher","first-page":"11283","DOI":"10.1021\/acs.nanolett.5c02316","type":"journal-article","volume":"25","author":"Wu","year":"2025","journal-title":"Nano Lett."},{"key":"ol-51-16-4661-R2","doi-asserted-by":"publisher","first-page":"5369","DOI":"10.1038\/s41467-022-33016-2","type":"journal-article","volume":"13","author":"Huang","year":"2022","journal-title":"Nat. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}