The authors present a new generation of molecule-based single-photon sources for quantum radiometry, integrating anthracene nanocrystals doped with dibenzoterrylene molecules into a polymeric microlens structure on a gold mirror. Finite element simulations with JCMsuite were performed to model the emission pattern and estimate the collection efficiency enhancement provided by the integrated microlens. The simulations predicted a factor of three enhancement in collection efficiency, guiding the device design and supporting the experimental observations.
P. Lombardi, et al. Advances in Quantum Metrology with Dielectrically Structured Single Photon Sources Based on Molecules. Adv. Quantum Technol., 7, 2400107 (2024).