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基于周期极化晶体MgO:PPLN的纠缠光子对制备过程的研究

吴杰 王海龙 张雄 陈君 王兆坤 龚华平 赵春柳

吴杰, 王海龙, 张雄, 陈君, 王兆坤, 龚华平, 赵春柳. 基于周期极化晶体MgO:PPLN的纠缠光子对制备过程的研究[J]. 应用光学, 2023, 44(1): 182-187. doi: 10.5768/JAO202344.0105001
引用本文: 吴杰, 王海龙, 张雄, 陈君, 王兆坤, 龚华平, 赵春柳. 基于周期极化晶体MgO:PPLN的纠缠光子对制备过程的研究[J]. 应用光学, 2023, 44(1): 182-187. doi: 10.5768/JAO202344.0105001
WU Jie, WANG Hailong, ZHANG Xiong, CHEN Jun, WANG Zhaokun, GONG Huaping, ZHAO Chunliu. Study on preparation process of entangled photon pairs based on periodically polarized crystal MgO:PPLN[J]. Journal of Applied Optics, 2023, 44(1): 182-187. doi: 10.5768/JAO202344.0105001
Citation: WU Jie, WANG Hailong, ZHANG Xiong, CHEN Jun, WANG Zhaokun, GONG Huaping, ZHAO Chunliu. Study on preparation process of entangled photon pairs based on periodically polarized crystal MgO:PPLN[J]. Journal of Applied Optics, 2023, 44(1): 182-187. doi: 10.5768/JAO202344.0105001

基于周期极化晶体MgO:PPLN的纠缠光子对制备过程的研究

doi: 10.5768/JAO202344.0105001
基金项目: 国家重点研发计划(2020YFF0217801);浙江省自然科学基金(LY22A040007)
详细信息
    作者简介:

    吴杰(1999—),男,硕士研究生,主要从事量子测量和计量方面的研究。Email:1733430781@qq.com

    通讯作者:

    赵春柳(1973—),女,博士,教授,主要从事光纤传感方面的研究。Email:clzhao@cjlu.edu.cn

  • 中图分类号: TN201;O437

Study on preparation process of entangled photon pairs based on periodically polarized crystal MgO:PPLN

  • 摘要: 基于二阶非线性效应的自发参量转换技术制备纠缠光子对过程中,以掺5 mol%MgO:PPLN周期极化晶体为研究对象,将光参量变换过程中的动量守恒和能量守恒条件与该晶体的色散方程,以及晶体极化周期随温度变化的热膨胀方程相联系,得到了355 nm、405 nm、532 nm、780 nm和1 064 nm这5个实验室常用波长点在制备纠缠光子对时的周期调谐特性和温度调谐特性。研究过程中发现,出现了晶体极化周期过小和产生两对纠缠光子对问题,总结并归纳了各波长点在一定极化周期和温度下与非线性晶体作用所产生的纠缠光波段范围。当选用其他非线性周期极化晶体进行实验时,改变QPM动量守恒条件中的极化周期项,同时根据具体使用的晶体改变色散方程。该研究方案可直接推广到使用不同非线性晶体产生通信光波段或红外光波段的纠缠光子对研究中,在制备量子光源等领域具有重要研究价值。
  • 图  1  PPLN折射率与波长的色散曲线

    Fig.  1  Dispersion curves of refractive index and wavelength of PPLN

    图  2  PPLN的周期调谐曲线

    Fig.  2  Periodic tuning curve of PPLN

    图  3  PPLN晶体的温度调谐曲线

    Fig.  3  Temperature tuning curve of PPLN crystal

    表  1  掺5 mol%MgO:PPLN晶体的色散方程参数

    Table  1  Parameters of Sellmeier dispersion equation for MgO:PPLN crystals doped with 5 mol%

    参数a1a2a3a4a5
    5.7560.09830.202189.3212.52
    参数a6b1b2b3b4
    1.32×10−22.86×10−64.7×10−86.113×10−81.516×10−4
    下载: 导出CSV

    表  2  PPLN晶体的温度调谐范围

    Table  2  Temperature tuning range of PPLN crystal

    泵浦光波长/μm晶体极化周期/μm闲置光波长
    范围/μm
    信号光波长
    范围/μm
    0.35550.378~0.3825.808~4.959
    0.40560.449~0.4554.137~3.672
    0.5327.50.770~0.8241.721~1.502
    0.532100.641~0.6563.120~2.798
    0.780190.897~0.9055.959~5.627
    1.064201.261~1.2676.793~6.633
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-04-22
  • 修回日期:  2022-05-26
  • 网络出版日期:  2022-09-08
  • 刊出日期:  2023-01-17

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