Distributing Polarization Entangled Photon Pairs with High Rate over Long Distance through Standard Telecommunication Fiber

Moderate photon pair rates limit fiber-based entanglement distribution. A bright non-degenerate photon pair source, designed for high idler photon detection efficiency on single-photon avalanche photodiodes and low signal photon dispersion in optical fiber, enables high pair rates even after propagating through 50 km standard telecommunication fiber.