High visibility two-photon interference of entangled photons from a quasi-phase-matched AlGaAs waveguide
Peyman Sarrafi, Eric Y. Zhu, Barry M. Holmes, David C. Hutchings, Stewart J. Aitchison, Li Qian · 2014
We experimentally demonstrate time-frequency entanglement of photon pairs produced in a cw-pumped quasi-phased-matched AlGaAs superlattice waveguide, producing 8×106 pairs/s with 96.0 ± 0.7% visibility without background subtraction, highest known visibility by far in AlGaAs waveguides.