Full Spatial Characterization of Entangled Structured Photons

• DOI: 10.1103/physrevlett.132.063802
• Publication Date: 2024-02-07T15:02:35Z
• Authors: Xiaoqin Gao; Yingwen Zhang; Alessio D’Errico; Alicia Sit; Khabat Heshami; Ebrahim Karimi
• Keywords: Photon entanglement; Characterization

Vector modes are fully polarized of light with spatially varying polarization distributions, and they have found widespread use in numerous applications such as microscopy, metrology, optical trapping, nanophotonics, communications. The entanglement has attracted significant interest, it been shown to tremendous potential expanding existing enabling new ones. However, due the complex structure entangled vector (EVMs), a complete characterization these remains challenging time consuming. Here, we used time-tagging event camera demonstrate ability completely characterize EVMs. Leveraging camera's capacity provide independent measurements for each pixel, simultaneously approximately 2.6×10^{6} between bipartite EVM through measuring only 16 observables polarization. We reveal that EVMs can naturally generate various polarization-entangled Bell states. This achievement is an important milestone high-dimensional structured light, could significantly impact implementation related quantum technologies. this technique extensive, pave way advancements communication, imaging, other areas where photons play crucial role.