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    • 9. 发明授权
    • Compact systems for generating polarization-entangled photons
    • 用于产生极化纠缠光子的紧凑型系统
    • US07639953B2
    • 2009-12-29
    • US11494815
    • 2006-07-27
    • Sean SpillaneCharles SantoriMarco FiorentinoRaymond G. Beausoliel
    • Sean SpillaneCharles SantoriMarco FiorentinoRaymond G. Beausoliel
    • H04B10/02
    • G02B27/28B82Y10/00B82Y20/00G02B1/005G02B27/286G02F1/39G06N99/002H04L9/0858
    • Various embodiments of the present invention are directed to compact systems for generating polarization-entangled photons. In one embodiment of the present invention, a non-degenerate, polarization-entangled photon source comprises a half-wave plate that outputs both a first pump beam and a second pump beam, and a first beam displacer that directs the first pump beam into a first transmission channel and the second pump beam into a second transmission channel. A down-conversion device converts the first pump beam into first signal and idler photons and converts the second pump beam into second signal and idler photons. A second beam displacer directs both the first signal and idler photons and the second signal and idler photons into a single transmission channel. A dichroic mirror directs the first and second signal photons to a first fiber optic coupler and the first and second idler photons to a second fiber optic coupler.
    • 本发明的各种实施例涉及用于产生偏振纠缠光子的紧凑系统。 在本发明的一个实施例中,非简并极化纠缠光子源包括输出第一泵浦光束和第二泵浦光束的半波片,以及将第一泵浦光束引导到第一泵浦光束的第一光束置换器 第一传输通道和第二泵浦波束进入第二传输通道。 下变换装置将第一泵浦光束转换成第一信号和惰轮光子,并将第二泵浦光束转换成第二信号和惰轮光子。 第二光束置换器将第一信号和惰轮光子以及第二信号和惰轮光子两者导向单个传输信道。 二向色镜将第一和第二信号光子引导到第一光纤耦合器,并将第一和第二惰轮光子引导到第二光纤耦合器。