中国物理B ›› 2023, Vol. 32 ›› Issue (3): 34207-034207.doi: 10.1088/1674-1056/acac19

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Atomic optical spatial mode extractor for vector beams based on polarization-dependent absorption

Hong Chang(常虹)1,2, Xin Yang(杨欣)3, Jinwen Wang(王金文)3, Yan Ma(马燕)1,2, Xinqi Yang(杨鑫琪)1,2, Mingtao Cao(曹明涛)1,2,†, Xiaofei Zhang(张晓斐)1,2, Hong Gao(高宏)3, Ruifang Dong(董瑞芳)1,2,‡, and Shougang Zhang(张首刚)1,2,§   

  1. 1 Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China;
    2 School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2022-11-02 修回日期:2022-12-06 接受日期:2022-12-16 出版日期:2023-02-14 发布日期:2023-02-21
  • 通讯作者: Mingtao Cao, Ruifang Dong, Shougang Zhang E-mail:mingtaocao@ntsc.ac.cn;dongruifang@ntsc.ac.cn;szhang@ntsc.ac.cn

Atomic optical spatial mode extractor for vector beams based on polarization-dependent absorption

Hong Chang(常虹)1,2, Xin Yang(杨欣)3, Jinwen Wang(王金文)3, Yan Ma(马燕)1,2, Xinqi Yang(杨鑫琪)1,2, Mingtao Cao(曹明涛)1,2,†, Xiaofei Zhang(张晓斐)1,2, Hong Gao(高宏)3, Ruifang Dong(董瑞芳)1,2,‡, and Shougang Zhang(张首刚)1,2,§   

  1. 1 Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China;
    2 School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2022-11-02 Revised:2022-12-06 Accepted:2022-12-16 Online:2023-02-14 Published:2023-02-21
  • Contact: Mingtao Cao, Ruifang Dong, Shougang Zhang E-mail:mingtaocao@ntsc.ac.cn;dongruifang@ntsc.ac.cn;szhang@ntsc.ac.cn

摘要: Vector beams with spiral phase and spatially varying polarization profiles have many applications from optical micromanipulation to materials processing. Here, we propose and demonstrate an atomic spatial mode extracting scheme for the vector beam based on polarization-dependent absorption in the atom vapor. By employing the linear polarization pump beam which induces polarization sensitive absorption in the atomic ensemble, a counter-propagated weak probe vector beam is extracted by spatial absorption, and extracted part still maintains the original polarization and the vortex phase. The topological charges of the extracted mode are verified by interfering with the Gaussian beam, and it can be found that the orbital angular momentum is conserved in the extracting process. Our work will have potential applications in non-destructive spatial mode identification, and is also useful for studying higher-dimensional quantum information based on atomic ensembles.

关键词: vector beam, polarization-dependent absorption, optical pumping

Abstract: Vector beams with spiral phase and spatially varying polarization profiles have many applications from optical micromanipulation to materials processing. Here, we propose and demonstrate an atomic spatial mode extracting scheme for the vector beam based on polarization-dependent absorption in the atom vapor. By employing the linear polarization pump beam which induces polarization sensitive absorption in the atomic ensemble, a counter-propagated weak probe vector beam is extracted by spatial absorption, and extracted part still maintains the original polarization and the vortex phase. The topological charges of the extracted mode are verified by interfering with the Gaussian beam, and it can be found that the orbital angular momentum is conserved in the extracting process. Our work will have potential applications in non-destructive spatial mode identification, and is also useful for studying higher-dimensional quantum information based on atomic ensembles.

Key words: vector beam, polarization-dependent absorption, optical pumping

中图分类号:  (Quantum optics)

  • 42.50.-p
42.25.Ja (Polarization) 32.80.Qk (Coherent control of atomic interactions with photons) 82.53.Kp (Coherent spectroscopy of atoms and molecules)