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Characterization of type-Ⅱ spontaneous parametric down-conversion in domain-engineered PPLN

机译:域工程PPLN中的Ⅱ型自发参数下转换的特性

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摘要

We characterize spontaneous parametric downconversion in a domain-engineered, type-Ⅱ periodically poled lithium niobate (PPLN) crystal using seeded emission and single-photon techniques. Using continuous-wave (CW) pumping at 775 nm wavelength, the signal and idler are at 1532.5 nm and 1567.5 nm, respectively. The domain-engineered crystal simultaneously phasematches signal and idler pairs: [H(1532.5 nm), V(1567.5 nm)] and [V(1532.5 nm), H(1567.5 nm)]. We observe the tuning curves of these processes through difference-frequency generation and through CW fiber-assisted, single-photon spectroscopy. These measurements indicate good matching in amplitude and bandwidth of the two processes and that the crystal can in principle be used effectively to generate polarization-entangled photon pairs.
机译:我们利用晶种发射和单光子技术,在域工程化的,Ⅱ型周期极化铌酸锂(PPLN)晶体中表征了自发参数下变频。使用775 nm波长的连续波(CW)泵浦,信号和惰轮分别在1532.5 nm和1567.5 nm。域工程晶体同时匹配信号和空闲对:[H(1532.5 nm),V(1567.5 nm)]和[V(1532.5 nm),H(1567.5 nm)]。我们通过产生差频并通过连续波纤维辅助的单光子光谱观察这些过程的调谐曲线。这些测量结果表明这两个过程在幅度和带宽上都有良好的匹配,并且该晶体原则上可以有效地用于产生偏振纠缠的光子对。

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  • 来源
  • 会议地点 San Francisco CA(US)
  • 作者单位

    Information Technology Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, USA 20899-8920;

    Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO, USA 80305-3337;

    Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO, USA 80305-3337;

    Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 325 Broadway, Boulder, CO, USA 80305-3337;

    Information Technology Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, USA 20899-8920;

    Information Technology Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, USA 20899-8920;

    Information Technology Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD, USA 20899-8920;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum optics; nonlinear optics; parametric processes; polarization entangled pair source; spontaneous parametric downconversion; entanglement;

    机译:量子光学非线性光学参数化过程;偏振纠缠对源;自发的参数下转换;纠缠;

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