Metasurface-based quantum displacement measurement. (IMAGE)
Caption
(a) Working principle of metasurface displacement measurement can be understood as the detection of the power of different modes of the converted light. The incident irradiated on the metasurface and converted into different modes. When the metasurface is shifted, the power of these converted modes changes. The displacement can be characterized by detecting and comparing the power of the corresponding modes. (b) Schematic of diffraction and coordinates after incident light passing through the metasurface. ∑ is the diffraction screen, and p is the detected spot on the observation plane. (c) Simulation of primary mode output power vs the displacement. (d) Calculated quantum Fisher information of the system.
Credit
Wenyi Ye,Yang Li,Lianwei Chen,Mingbo Pu,Zheting Meng,Yuanjian Huang,Hengshuo Guo,Xiaoyin Li,Yinghui Guo,Xiong Li,Yun Long,Emmanuel Stratakis,Xiangang Luo
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CC BY-NC-ND