Fig. 4: Monochromatic single-photon emitters from 500 nm to 800 nm.
From: Laser manufacturing of spatial resolution approaching quantum limit
a The PL Spectra of laser-written single-photon single colour centres with emission ranging from 500 nm to 800 nm. b Histogram of ZPL wavelength distribution taken from more than ten thousand quantum emitters. c Schematic of the hybrid single-photon light-emitting device. The illustration shows the physical drawing of the device. d Representative laser-diode driven PL spectra of laser-written SPE. Inset is the antibunching curve of the corresponding spectra
