View in EDS

Continuous and reversible electrical-tuning of fluorescent decay rate via Fano resonance.

Saved in:
Bibliographic Details
Title: Continuous and reversible electrical-tuning of fluorescent decay rate via Fano resonance.
Authors: Polat, Emre Ozan1,2,3 (AUTHOR) emre.polat@bilkent.edu.tr, Artvin, Zafer3,4 (AUTHOR), Şaki, Yusuf3,4 (AUTHOR), Bek, Alpan3,4 (AUTHOR), Sahin, Ramazan3,5,6 (AUTHOR) rsahin@itu.edu.tr
Source: Nanotechnology. 2026, Vol. 37 Issue 16, p1-6. 6p.
Subjects: Electronic control, Surface plasmons, Fluorescence quenching, Quantum interference, Radiative transitions, Optical properties, Quantum states
Abstract: We demonstrate electrically tunable control of the radiative and nonradiative decay rates of a fluorescent molecule through a Fano-resonant transparency embedded in the plasmonic local density of optical states (LDOSs). An auxiliary quantum object (QO) placed at the hotspot of a plasmonic nanoparticle suppresses the plasmonic excitation at its transition frequency ω QO , thereby creating a narrow transparency window and reducing the LDOS at ω = ω QO . 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 ω QO 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–matter interaction in integrated photonics, with potential applications in single-photon sources, electrically programmable quantum devices, super-resolution microscopy, and surface-enhanced Raman spectroscopy. [ABSTRACT FROM AUTHOR]
Copyright of Nanotechnology is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:We demonstrate electrically tunable control of the radiative and nonradiative decay rates of a fluorescent molecule through a Fano-resonant transparency embedded in the plasmonic local density of optical states (LDOSs). An auxiliary quantum object (QO) placed at the hotspot of a plasmonic nanoparticle suppresses the plasmonic excitation at its transition frequency ω QO , thereby creating a narrow transparency window and reducing the LDOS at ω = ω QO . 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 ω QO 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–matter interaction in integrated photonics, with potential applications in single-photon sources, electrically programmable quantum devices, super-resolution microscopy, and surface-enhanced Raman spectroscopy. [ABSTRACT FROM AUTHOR]
ISSN:09574484
DOI:10.1088/1361-6528/ae5cac