{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,29]],"date-time":"2026-08-29T08:16:50Z","timestamp":1787991410697,"version":"build-2784847793"},"reference-count":66,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T00:00:00Z","timestamp":1782432000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100004155","name":"Magnus Ehrnrooth Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004155","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,7,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Epsilon\u2010near\u2010zero (ENZ) photonics provides a powerful route to extreme dispersion engineering, strong field confinement, and unconventional wave phenomena. A closely related concept,\n                    <jats:italic>photonic doping<\/jats:italic>\n                    , employs subwavelength nonmagnetic dielectric inclusions in ENZ media to enable exotic responses such as perfect\u2010magnetic\u2010conductor behavior and simultaneous epsilon\u2010and mu\u2010near\u2010zero states. However, photonic doping has remained limited to microwave and far\u2010infrared regimes due to intrinsic losses in optical ENZ materials. Here, photonic doping is demonstrated at optical frequencies by embedding a periodic array of dielectric Mie resonators within an ultralow\u2010loss all\u2010dielectric ENZ platform based on near\u2010cutoff Bragg microcavities. The resulting structures support spectrally isolated quasi\u2010singular coupled Bragg\u2013Mie resonances spanning electric and magnetic multipolar orders and their overtones. These modes exhibit effective near\u2010zero\u2010index dispersion, with fields confined either within or between the nanoparticles. A representative \u2010scale doped structure exhibits a quality factor of  and a magnetic Purcell enhancement exceeding  in the near\u2010infrared. This platform elevates photonic doping from a microwave\u2010only concept to a fully optical, low\u2010loss, and multipole\u2010resolved system, enabling ultra\u2010narrowband Mie\u2010like resonances, enhanced magnetic\u2013light interactions, and new opportunities in multipolar\u2010selective spectroscopy and lasing, low\u2010threshold nonlinear optics, and engineered spontaneous emission.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70186","type":"journal-article","created":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T14:32:47Z","timestamp":1782484367000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Photonic Doping of Epsilon\u2010Near\u2010Zero Bragg Microcavities"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1218-4420","authenticated-orcid":false,"given":"Ali","family":"Panahpour","sequence":"first","affiliation":[{"name":"Photonics Laboratory, Physics Unit Tampere University  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jussi","family":"Kelavuori","sequence":"additional","affiliation":[{"name":"Photonics Laboratory, Physics Unit Tampere University  Tampere Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mikko","family":"Huttunen","sequence":"additional","affiliation":[{"name":"Photonics Laboratory, Physics Unit Tampere University  Tampere 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