title: Observation of 1.2-GHz linewidth of zero-phonon-line in photoluminescence spectra of nitrogen vacancy centers in nanodiamonds using a Fabry-Perot interferometer.
abstract: Photoluminescence (PL) spectra of single nitrogen vacancy (NV) centers in 50-nm diamond nanocrystals at the zero-phonon line (ZPL) were directly observed using a Fabry-Perot interferometer at cryogenic temperatures. The narrowest linewidth of ZPL was 1.2 GHz (1.9 ± 0.7 GHz on average), comparable to ZPL linewidths in PL spectra reported for NV centers in pure bulk diamond. This observation is important to the application of NV centers for use in quantum communication and computation devices, and in nano-sensing.
authors: Hong-Quan
authors: HQ
authors: Zhao
authors: Masazumi
authors: M
authors: Fujiwara
authors: Masayuki
authors: M
authors: Okano
authors: Shigeki
authors: S
authors: Takeuchi
mesh_terms: D018130:Diamond / Q000737:chemistry*; D007368:Interferometry / Q000379:methods*; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing / Q000379:methods*; D008872:Microwaves; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D009584:Nitrogen / Q000737:chemistry*
chemical_list: D018130:Diamond; D009584:Nitrogen