تقرير
Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals
| العنوان: | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
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| المؤلفون: | Guo, Qiangbing, Wu, Yun-Kun, Zhang, Di, Zhang, Qiuhong, Guo, Guang-Can, Alù, Andrea, Ren, Xi-Feng, Qiu, Cheng-Wei |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics, Condensed Matter - Materials Science |
| الوصف: | Polarization entanglement holds significant importance for photonic quantum technologies. Recently emerging subwavelength nonlinear quantum light sources, e.g., GaP and LiNbO3 thin films, benefiting from the relaxed phase-matching constraints and volume confinement, has shown intriguing properties, such as high-dimensional hyperentanglement and robust entanglement anti-degradation. Van der Waals (vdW) NbOCl2 crystal, renowned for its superior optical nonlinearities, has emerged as one of ideal candidates for ultrathin quantum light sources [Nature 613, 53 (2023)]. However, polarization-entanglement is inaccessible in NbOCl2 crystal due to its unfavorable nonlinear susceptibility tensor. Here, by leveraging the twist-stacking degree of freedom inherently in vdW systems, we showcase the preparation of tunable polarization entanglement and quantum Bell states. Our work not only provides a new and tunable polarization-entangled vdW photon-pair source, but also introduces a new knob in engineering the entanglement state of quantum light at the nanoscale. Comment: 16 pages,4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2408.06751 |
| رقم الأكسشن: | edsarx.2408.06751 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |