中国物理B ›› 2021, Vol. 30 ›› Issue (10): 100312-100312.doi: 10.1088/1674-1056/ac20cb

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Widely tunable single-photon source with high spectral-purity from telecom wavelength to mid-infrared wavelength based on MgO:PPLN

Chang-Wei Sun(孙昌伟)1, Yu Sun(孙宇)1, Jia-Chen Duan(端家晨)1, Guang-Tai Xue(薛广太)1, Yi-Chen Liu(刘奕辰)1, Liang-Liang Lu(陆亮亮)1,2, Qun-Yong Zhang(张群永)3, Yan-Xiao Gong(龚彦晓)1, Ping Xu(徐平)1,†, and Shi-Ning Zhu(祝世宁)1   

  1. 1 National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China;
    2 Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China;
    3 Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003, China
  • 收稿日期:2021-08-10 修回日期:2021-08-18 接受日期:2021-08-25 出版日期:2021-09-17 发布日期:2021-10-09
  • 通讯作者: Ping Xu E-mail:pingxu520@nju.edu.cn
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2017YFA0303700 and 2019YFA0308700) and the National Natural Science Foundation of China (Grant Nos. 11627810 and 11690031).

Widely tunable single-photon source with high spectral-purity from telecom wavelength to mid-infrared wavelength based on MgO:PPLN

Chang-Wei Sun(孙昌伟)1, Yu Sun(孙宇)1, Jia-Chen Duan(端家晨)1, Guang-Tai Xue(薛广太)1, Yi-Chen Liu(刘奕辰)1, Liang-Liang Lu(陆亮亮)1,2, Qun-Yong Zhang(张群永)3, Yan-Xiao Gong(龚彦晓)1, Ping Xu(徐平)1,†, and Shi-Ning Zhu(祝世宁)1   

  1. 1 National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China;
    2 Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China;
    3 Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huaian 223003, China
  • Received:2021-08-10 Revised:2021-08-18 Accepted:2021-08-25 Online:2021-09-17 Published:2021-10-09
  • Contact: Ping Xu E-mail:pingxu520@nju.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2017YFA0303700 and 2019YFA0308700) and the National Natural Science Foundation of China (Grant Nos. 11627810 and 11690031).

摘要: By utilizing the extended phase-matching (EPM) method, we investigate the generation of single photons with high spectral-purity in a magnesium-doped periodically-poled lithium niobate (MgO:PPLN) crystal via the spontaneous parametric down-conversion (SPDC) process. By adjusting the temperature and pump wavelength, the wavelength of the single photons can be tuned from telecom to mid-infrared (MIR) wavelengths, for which the spectral-purity can be above 0.95 with high transmission filters. In experiments, we engineer a MgO:PPLN with poling period of 20.35 μ which emits the EPM photon pair centered at 1496.6 nm and 1644.0 nm and carry out the joint spectral intensity (JSI) and Glauber's second-order self-correlation measurements to characterize the spectral purity. The results are in good agreement with the numerical simulations. Our work may provide a valuable approach for the generation of spectrally pure single photons at a wide range of wavelengths which is competent for various photonic quantum technologies.

关键词: single photons, quantum technologies, periodically-poled lithium niobate

Abstract: By utilizing the extended phase-matching (EPM) method, we investigate the generation of single photons with high spectral-purity in a magnesium-doped periodically-poled lithium niobate (MgO:PPLN) crystal via the spontaneous parametric down-conversion (SPDC) process. By adjusting the temperature and pump wavelength, the wavelength of the single photons can be tuned from telecom to mid-infrared (MIR) wavelengths, for which the spectral-purity can be above 0.95 with high transmission filters. In experiments, we engineer a MgO:PPLN with poling period of 20.35 μ which emits the EPM photon pair centered at 1496.6 nm and 1644.0 nm and carry out the joint spectral intensity (JSI) and Glauber's second-order self-correlation measurements to characterize the spectral purity. The results are in good agreement with the numerical simulations. Our work may provide a valuable approach for the generation of spectrally pure single photons at a wide range of wavelengths which is competent for various photonic quantum technologies.

Key words: single photons, quantum technologies, periodically-poled lithium niobate

中图分类号:  (Quantum information)

  • 03.67.-a
03.67.Hk (Quantum communication) 42.50.Ex (Optical implementations of quantum information processing and transfer) 42.65.-k (Nonlinear optics)