Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals
Qiangbing Guo,
Yun-Kun Wu,
Di Zhang
et al.
Abstract:Polarization entanglement holds significant importance for photonic quantum technologies. Recently emerging subwavelength nonlinear quantum light sources, e.g., GaP and LiNbO
3
thin films, benefiting from the relaxed phase-matching constraints and volume confinement, have shown intriguing properties, such as high-dimensional hyperentanglement and robust entanglement anti-degradation. Van der Waals (vdW) NbOCl
2
crystal, with strong optical nonlinearities, has emerg… Show more
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