Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals
Abstract 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, have shown intriguing pr...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-54876-w |
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| author | Qiangbing Guo Yun-Kun Wu Di Zhang Qiuhong Zhang Guang-Can Guo Andrea Alù Xi-Feng Ren Cheng-Wei Qiu |
| author_facet | Qiangbing Guo Yun-Kun Wu Di Zhang Qiuhong Zhang Guang-Can Guo Andrea Alù Xi-Feng Ren Cheng-Wei Qiu |
| author_sort | Qiangbing Guo |
| collection | DOAJ |
| description | Abstract 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, have shown intriguing properties, such as high-dimensional hyperentanglement and robust entanglement anti-degradation. Van der Waals (vdW) NbOCl2 crystal, with strong optical nonlinearities, has emerged as a potential candidate for ultrathin quantum light sources. However, polarization entanglement is inaccessible in the 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 polarization entanglement and quantum Bell states. |
| format | Article |
| id | doaj-art-92fac041afcf49edb70b8c247bf2f984 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-92fac041afcf49edb70b8c247bf2f9842024-12-08T12:35:49ZengNature PortfolioNature Communications2041-17232024-12-011511910.1038/s41467-024-54876-wPolarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystalsQiangbing Guo0Yun-Kun Wu1Di Zhang2Qiuhong Zhang3Guang-Can Guo4Andrea Alù5Xi-Feng Ren6Cheng-Wei Qiu7Department of Electrical and Computer Engineering, National University of SingaporeCAS Key Laboratory of Quantum Information, University of Science and Technology of ChinaPhotonics Initiative, Advanced Science Research Center, City University of New YorkSchool of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of SciencesCAS Key Laboratory of Quantum Information, University of Science and Technology of ChinaPhotonics Initiative, Advanced Science Research Center, City University of New YorkCAS Key Laboratory of Quantum Information, University of Science and Technology of ChinaDepartment of Electrical and Computer Engineering, National University of SingaporeAbstract 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, have shown intriguing properties, such as high-dimensional hyperentanglement and robust entanglement anti-degradation. Van der Waals (vdW) NbOCl2 crystal, with strong optical nonlinearities, has emerged as a potential candidate for ultrathin quantum light sources. However, polarization entanglement is inaccessible in the 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 polarization entanglement and quantum Bell states.https://doi.org/10.1038/s41467-024-54876-w |
| spellingShingle | Qiangbing Guo Yun-Kun Wu Di Zhang Qiuhong Zhang Guang-Can Guo Andrea Alù Xi-Feng Ren Cheng-Wei Qiu Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals Nature Communications |
| title | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
| title_full | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
| title_fullStr | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
| title_full_unstemmed | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
| title_short | Polarization entanglement enabled by orthogonally stacked van der Waals NbOCl2 crystals |
| title_sort | polarization entanglement enabled by orthogonally stacked van der waals nbocl2 crystals |
| url | https://doi.org/10.1038/s41467-024-54876-w |
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