Microchip 10-µm-wide integrates single-photon quantum emitters, generating any desired direction, polarization, intensity, or spatial profile

https://physics.aps.org/articles/v18/151

"laser pulse generates wave-like surface linearly/ circularly polarized photons in thin semiconductor, passes through 2 antenna arrays redirecting as light... 30-nm-thick silicon dioxide wafer resting on 150-nm-thick silver mirror base... quantum emitter: nm-scale diamond containing some nitrogen atoms paired with carbon vacancies, polariton waves spread out from diamond, passing through many 35-nm-thick silver strips, 200 nm apart, as controllable antennae... future: electrically driven rather than laser emitter so more marketable"