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An auxiliary quantum object (QO) placed at the hotspot of a plasmonic nanoparticle suppresses the plasmonic excitation at its transition frequency\n \n \n \n <\/jats:tex-math>\n \n \n \n \u03c9<\/mml:mi>\n \n \n QO<\/mml:mi>\n <\/mml:mrow>\n <\/mml:mrow>\n <\/mml:msub>\n <\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>\n , thereby creating a narrow transparency window and reducing the LDOS at\n \n \n \n <\/jats:tex-math>\n \n \n \u03c9<\/mml:mi>\n =<\/mml:mo>\n \n \u03c9<\/mml:mi>\n \n \n QO<\/mml:mi>\n <\/mml:mrow>\n <\/mml:mrow>\n <\/mml:msub>\n <\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>\n . When the fluorescence frequency of a nearby emitter overlaps this window, the plasmon-induced enhancement of both radiative and nonradiative decay is strongly suppressed. Because\n \n \n \n <\/jats:tex-math>\n \n \n \n \u03c9<\/mml:mi>\n \n \n QO<\/mml:mi>\n <\/mml:mrow>\n <\/mml:mrow>\n <\/mml:msub>\n <\/mml:mrow>\n <\/mml:math>\n <\/jats:inline-formula>\n can be shifted electrically, the transparency can be moved reversibly across the fluorescence line, enabling continuous voltage control of the decay rates. Three-dimensional Maxwell simulations predict tuning of the radiative and nonradiative channels by up to two orders of magnitude. The proposed mechanism offers a compact route toward fast, reversible control of light\u2013matter interaction in integrated photonics, with potential applications in single-photon sources, electrically programmable quantum devices, super-resolution microscopy, and surface-enhanced Raman spectroscopy.\n <\/jats:p>","DOI":"10.1088\/1361-6528\/ae5cac","type":"journal-article","created":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T22:47:48Z","timestamp":1775688468000},"page":"165701","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Continuous and reversible electrical-tuning of fluorescent decay rate via Fano resonance"],"prefix":"10.1088","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6652-059X","authenticated-orcid":true,"given":"Emre Ozan","family":"Polat","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zafer","family":"Artvin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yusuf","family":"\u015eaki","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0190-7945","authenticated-orcid":true,"given":"Alpan","family":"Bek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9269-1528","authenticated-orcid":true,"given":"Ramazan","family":"Sahin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"266","published-online":{"date-parts":[[2026,4,17]]},"reference":[{"key":"nanoae5cacbib1","doi-asserted-by":"publisher","first-page":"225","DOI":"10.3390\/bios12040225","type":"journal-article","article-title":"Plasmonic metal nanoparticles hybridized with 2D nanomaterials for SERS detection: a review","volume":"12","author":"Serafinelli","year":"2022","journal-title":"Biosensors"},{"key":"nanoae5cacbib2","doi-asserted-by":"publisher","first-page":"807","DOI":"10.1038\/nphys708","type":"journal-article","article-title":"A single-photon transistor using nanoscale surface plasmons","volume":"3","author":"Chang","year":"2007","journal-title":"Nat. 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