中国物理B ›› 2022, Vol. 31 ›› Issue (10): 104210-104210.doi: 10.1088/1674-1056/ac6eda

所属专题： SPECIAL TOPIC — Fabrication and manipulation of the second-generation quantum systems

• SPECIAL TOPIC—Fabrication and manipulation of the second-generation quantum systems • 上一篇    下一篇

Up-conversion detection of mid-infrared light carrying orbital angular momentum

Zheng Ge(葛正)1,2, Chen Yang(杨琛)1,2, Yin-Hai Li(李银海)1,2, Yan Li(李岩)1,2, Shi-Kai Liu(刘世凯)1,2, Su-Jian Niu(牛素俭)1,2, Zhi-Yuan Zhou(周志远)1,2,†, and Bao-Sen Shi(史保森)1,2,‡   

  1. 1. CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China;
    2. CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2022-02-21 修回日期:2022-05-09 出版日期:2022-10-16 发布日期:2022-09-24
  • 通讯作者: Zhi-Yuan Zhou, Bao-Sen Shi E-mail:zyzhouphy@ustc.edu.cn;drshi@ustc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 92065101 and 11934013) and Anhui Initiative In Quantum Information Technologies (Grant No. AHY020200).

Up-conversion detection of mid-infrared light carrying orbital angular momentum

Zheng Ge(葛正)1,2, Chen Yang(杨琛)1,2, Yin-Hai Li(李银海)1,2, Yan Li(李岩)1,2, Shi-Kai Liu(刘世凯)1,2, Su-Jian Niu(牛素俭)1,2, Zhi-Yuan Zhou(周志远)1,2,†, and Bao-Sen Shi(史保森)1,2,‡   

  1. 1. CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China;
    2. CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2022-02-21 Revised:2022-05-09 Online:2022-10-16 Published:2022-09-24
  • Contact: Zhi-Yuan Zhou, Bao-Sen Shi E-mail:zyzhouphy@ustc.edu.cn;drshi@ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 92065101 and 11934013) and Anhui Initiative In Quantum Information Technologies (Grant No. AHY020200).

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摘要： Frequency up-conversion is an effective method of mid-infrared (MIR) detection by converting long-wavelength photons to the visible domain, where efficient detectors are readily available. Here, we generate MIR light carrying orbital angular momentum (OAM) from a difference frequency generation process and perform up-conversion on it via sum frequency conversion in a bulk quasi-phase-matching crystal. The maximum quantum conversion efficiencies from MIR to visible are 34.0%, 10.4%, and 3.5% for light with topological charges of 0, 1, and 2, respectively, achieved by utilizing an optimized strong pump light. We also verify the OAM conservation with a specially designed interferometer, and the results agree well with the numerical simulations. Our study opens up the possibilities for generating, manipulating, and detecting MIR light that carries OAM, and will have great potential for optical communications and remote sensing in the MIR regime.

关键词: nonlinear optics, frequency up-conversion, mid-infrared detection

Abstract: Frequency up-conversion is an effective method of mid-infrared (MIR) detection by converting long-wavelength photons to the visible domain, where efficient detectors are readily available. Here, we generate MIR light carrying orbital angular momentum (OAM) from a difference frequency generation process and perform up-conversion on it via sum frequency conversion in a bulk quasi-phase-matching crystal. The maximum quantum conversion efficiencies from MIR to visible are 34.0%, 10.4%, and 3.5% for light with topological charges of 0, 1, and 2, respectively, achieved by utilizing an optimized strong pump light. We also verify the OAM conservation with a specially designed interferometer, and the results agree well with the numerical simulations. Our study opens up the possibilities for generating, manipulating, and detecting MIR light that carries OAM, and will have great potential for optical communications and remote sensing in the MIR regime.

Key words: nonlinear optics, frequency up-conversion, mid-infrared detection

中图分类号:  (Nonlinear optics)

  • 42.65.-k
52.70.Kz (Optical (ultraviolet, visible, infrared) measurements) 85.60.Gz (Photodetectors (including infrared and CCD detectors)) 42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)