On-chip quantum light source generates entanglement
https://www.laserfocusworld.com/lasers-sources/article/14292764/onchip-quantum-light-source-generates-entanglement
"combined electrically excited laser cavity, noise-suppression filter (microrings/waveguides)... indium phosphide laser’s light to silicon nitride chip using waveguides and three nonlinear microring resonators, which act as a noise-suppression filter... light exits the third microring, a pair of entangled photons are generated... shrinking quantum light source size by 1/1000 without cryogenic... efficient... quantum computers and internet... integrated and scalable quantum source... quantum communications"
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