Germanium vacancy (GeV) centers in diamonds constitute a promising platform for single-
photon sources to be used in quantum information technologies. Emission from these color
centers can be enhanced by utilizing a cavity that is resonant at the peak emission
wavelength. We investigate circular plasmonic Bragg cavities for enhancing the emission
from single GeV centers in nanodiamonds (NDs) at the zero phonon line. Following
simulations of the enhancement for different configuration parameters, the appropriately …