Multichannel polarization-entangled photonpair source for entanglement distribution

• 作 者: 胡梦宁 陈玉萍 李广珍 陈险峰
• 机 构: State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Physics a
• 出 处: Chinese Optics Letters
• 发表日期: 2016年06期
• 关键词: entangled entanglement waveguide interferometer pumped hundreds periodically inh

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.

Based on type I quasi-phase-matched spontaneous parametric down conversion in a single Mg O: PPLN waveguide (MgO: PPLN) waveguide is proposed. 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, which will be significant for future entanglement distribution networks.