A multichannel polarization-entangled photon-pair source in an Mg O-doped periodically poled lithium niobate（Mg O：PPLN） waveguide is proposed. Based on type I quasi-phase-matched spontaneous parametric down convers...A multichannel polarization-entangled photon-pair source in an Mg O-doped periodically poled lithium niobate（Mg O：PPLN） waveguide is proposed. Based on type I quasi-phase-matched spontaneous parametric down conversion in a single Mg O： PPLN waveguide placed inside a Sagnac interferometer and pumped by monochromatic light, a source capable of supporting tens to hundreds of channels of polarization-entangled photon pairs in fiber communication bands simultaneously can be achieved. An inherent channel switch of this source is investigated,which will be significant for future entanglement distribution networks.展开更多
基金supported by the National Natural Science Fund of China(Nos.11574208,10874120,and60407006)the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry
文摘A multichannel polarization-entangled photon-pair source in an Mg O-doped periodically poled lithium niobate（Mg O：PPLN） waveguide is proposed. Based on type I quasi-phase-matched spontaneous parametric down conversion in a single Mg O： PPLN waveguide placed inside a Sagnac interferometer and pumped by monochromatic light, a source capable of supporting tens to hundreds of channels of polarization-entangled photon pairs in fiber communication bands simultaneously can be achieved. An inherent channel switch of this source is investigated,which will be significant for future entanglement distribution networks.
