This work proposes a novel nanoantenna design for generating single photons at room temperature via inelastic tunneling in the Coulomb blockade regime. The proposed "SelfSiM" (Self-Similar nanoparticle on Mirror) antenna merges concepts from nanoparticle-on-mirror and self-similar antennas to simultaneously boost the local density of optical states and achieve efficient photon outcoupling. The authors used JCMsuite to perform 3D finite-element method (FEM) simulations of Maxwell's equations, analyzing the antenna's Purcell factor, radiative efficiency, and eigenmodes to validate and optimize the design.
G. Kewes and O. Benson. Proposal for a Tunable Room‐Temperature Single‐Photon Source Based on a Plasmonic Nanoantenna Driven by Inelastic Tunneling in the Coulomb Regime. Phys. Status Solidi A, 221, 2300366 (2024).