Photonics Research, Volume. 10, Issue 12, 2702(2022)

High-dimensional entanglement generation based on a Pancharatnam–Berry phase metasurface Editors' Pick

Zhi-Xiang Li1、†, Dong Zhu1、†, Pei-Cheng Lin1, Peng-Cheng Huo1, Hong-Kuan Xia1, Ming-Ze Liu1, Ya-Ping Ruan1, Jiang-Shan Tang1, Miao Cai1, Hao-Dong Wu1, Chao-Ying Meng1, Han Zhang1, Peng Chen1, Ting Xu1, Ke-Yu Xia1,2,3,4、*, Li-Jian Zhang1,5、*, and Yan-Qing Lu1,6、*
Author Affiliations
  • 1National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
  • 2Hefei National Laboratory, Hefei 230088, China
  • 3Shishan Laboratory, Suzhou Campus of Nanjing University, Suzhou 215000, China
  • 4e-mail:
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    Figures & Tables(8)
    (a) Schematic diagram of the proposed metasurface. The size of the spatially variant elliptic cylinders is Dx=210 nm, Dy=100 nm, and H=600 nm. The periods are Px=Py=400 nm. (b) Scanning electron micrograph (SEM) of the fabricated device. The metasurface was fabricated through a top-down nanofabrication process including e-beam lithography and inductively coupled plasma etching technology. (c) Schematic of the experimental concept.
    Experimental setup to generate the entanglement and record the coincidence images. QWP, quarter-wave plate; HWP, half-wave plate; PBS, polarizing beam splitter; M, mirror; DM, dichroic mirror; DPBS, dual-wavelength PBS; DHWP, dual-wavelength HWP.
    Experimental results of the coincidence images. The first column tells Alice’s trigger polarization with which the images are recorded. R and L represent right- and left-handed circular polarization. The images with the path, topological charge, and polarization information acquired at Bob’s side depend on the trigger polarization. All images are given with a 99:1 contrast setting of the ICCD.
    (a) Real and imaginary parts of the reconstructed density matrix. (b) Experimental setup to perform the quantum state tomography.
    Numerically simulated polarization conversion efficiency based on the wavelength.
    Numerically simulated transmittance spectrum of the metasurface.
    Measured far-field diffraction intensity distributions of the metasurface. (a) Diffraction intensity distribution with a linearly polarized light incidence. (b) and (c) are the diffraction intensity distributions with R and L polarized incidence, separately. The results are obtained with a classical light source with a wavelength of 810 nm.
    Reconstructed density matrix of the original polarization entanglement state.
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    Zhi-Xiang Li, Dong Zhu, Pei-Cheng Lin, Peng-Cheng Huo, Hong-Kuan Xia, Ming-Ze Liu, Ya-Ping Ruan, Jiang-Shan Tang, Miao Cai, Hao-Dong Wu, Chao-Ying Meng, Han Zhang, Peng Chen, Ting Xu, Ke-Yu Xia, Li-Jian Zhang, Yan-Qing Lu. High-dimensional entanglement generation based on a Pancharatnam–Berry phase metasurface[J]. Photonics Research, 2022, 10(12): 2702

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    Paper Information

    Category: Quantum Optics

    Received: Jul. 19, 2022

    Accepted: Sep. 26, 2022

    Published Online: Nov. 11, 2022

    The Author Email: Ke-Yu Xia (keyu.xia@nju.edu.cn), Li-Jian Zhang (lijian.zhang@nju.edu.cn), Yan-Qing Lu (yqlu@nju.edu.cn)

    DOI:10.1364/PRJ.470663

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