Enhancement of Photoluminescence Collection from Diamond-Based Quantum Emitter with Diamond Photonic Nanopillar

This work aimed to examine the effects of photonic diamond nanopillar toward enhancing the collection efficiency of photoluminescence signal from quantum emitters in diamond. In this work, the finite element methods were used as a platform to characterize the emission pattern and the collection efficiency. The collection efficiency value was then characterize based on various variables, including pillar diameters, dipole orientation, emission wavelength, and emitter placement inside the photonic structure. From the simulations, the collection efficiency from an optimized nanopillar structure can be improved up to three times the bulk value, particularly in pillar diameters ranging from 70-100nm. Furthermore, the multivariable dependency studies provide valuable insight into the design and engineering tolerance of future practical quantum-based devices.