FIBER-BASED BROADBAND POLARIZATION-ENTANGLED PHOTON SOURCE

摘要

There is provided a fiber-based broadband polarization-entangled photonsource. Thepolarization entangled photon pair source module comprises an optical fiber, apump to couplelight into the fiber and one or more suppression filters following the fiber.The optical fiberpreferably is a periodically poled silica fiber and the pump is preferably alaser diode pump. Thepresent invention relates to a compensation-free, alignment-free, diode-pumped, broadband,polarization-entangled photon source that is based on a low-birefringencefiber. It has anextremely simple configuration capitalizing on the compensation-free anddirect generationcapability of a low-birefringence fiber. The source has broad bandwidth, high-quality andpolarization-entanglement. The present invention is compact, robust, low-power, low-cost,alignment-free and room-temperature operable, featuring a simple turn-key,plug-and-playoperation.