Room-Temperature Single Photon Source: Nanocrystals in Photonic Bandgap Microcavities

Single-photon sources based on nanocrystals in 1-D photonic bandgap microcavities (cholesteric liquid crystal and Bragg reflectors) are reported. Studied emitters include nanocrystal quantum dots, color centers in nanodiamonds, and trivalent rare-earth ions in nanocrystals.