High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film
Entanglement, as a crucial feature of quantum systems, is essential for various applications of quantum technologies. High-dimensional entanglement has the potential to encode arbitrary large amount of information and enhance robustness against eavesdropping and quantum cloning. The orbital angular...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-08-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.971360/full |
| _version_ | 1811321417176711168 |
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| author | Fan Dai Shuang-Yin Huang Min Wang Chenghou Tu Yongnan Li Hui-Tian Wang Hui-Tian Wang |
| author_facet | Fan Dai Shuang-Yin Huang Min Wang Chenghou Tu Yongnan Li Hui-Tian Wang Hui-Tian Wang |
| author_sort | Fan Dai |
| collection | DOAJ |
| description | Entanglement, as a crucial feature of quantum systems, is essential for various applications of quantum technologies. High-dimensional entanglement has the potential to encode arbitrary large amount of information and enhance robustness against eavesdropping and quantum cloning. The orbital angular momentum (OAM) entanglement can achieve the high-dimensional entanglement nearly for free stems due to its discrete and theoretically infinite-dimensional Hilbert space. A stringent limitation, however, is that the phase-matching condition limits the entanglement dimension because the coincidence rate decreases significantly for high-order modes. Here we demonstrate relatively flat high-dimensional OAM entanglement based on a spontaneous parametric down conversion (SPDC) from an ultrathin nonlinear lithium niobite crystal. The difference of coincidences between the different-order OAM modes significantly decreases. To further enhance the nonlinear process, this microscale SPDC source will provide a promising and integrated method to generate optimal high-dimensional OAM entanglement. |
| first_indexed | 2024-04-13T13:17:19Z |
| format | Article |
| id | doaj.art-6ed4322ed69540ff9b889c91d8a69e0d |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-13T13:17:19Z |
| publishDate | 2022-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-6ed4322ed69540ff9b889c91d8a69e0d2022-12-22T02:45:26ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-08-011010.3389/fphy.2022.971360971360High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear filmFan Dai0Shuang-Yin Huang1Min Wang2Chenghou Tu3Yongnan Li4Hui-Tian Wang5Hui-Tian Wang6Key Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin, ChinaKey Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin, ChinaKey Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin, ChinaKey Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin, ChinaKey Laboratory of Weak-Light Nonlinear Photonics and School of Physics, Nankai University, Tianjin, ChinaNational Laboratory of Solid State Microstructures, Nanjing University, Nanjing, ChinaCollaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, ChinaEntanglement, as a crucial feature of quantum systems, is essential for various applications of quantum technologies. High-dimensional entanglement has the potential to encode arbitrary large amount of information and enhance robustness against eavesdropping and quantum cloning. The orbital angular momentum (OAM) entanglement can achieve the high-dimensional entanglement nearly for free stems due to its discrete and theoretically infinite-dimensional Hilbert space. A stringent limitation, however, is that the phase-matching condition limits the entanglement dimension because the coincidence rate decreases significantly for high-order modes. Here we demonstrate relatively flat high-dimensional OAM entanglement based on a spontaneous parametric down conversion (SPDC) from an ultrathin nonlinear lithium niobite crystal. The difference of coincidences between the different-order OAM modes significantly decreases. To further enhance the nonlinear process, this microscale SPDC source will provide a promising and integrated method to generate optimal high-dimensional OAM entanglement.https://www.frontiersin.org/articles/10.3389/fphy.2022.971360/fullorbital angular momentumquantum entanglementhigh-dimensional entanglementnonlinear filmphase matching |
| spellingShingle | Fan Dai Shuang-Yin Huang Min Wang Chenghou Tu Yongnan Li Hui-Tian Wang Hui-Tian Wang High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film Frontiers in Physics orbital angular momentum quantum entanglement high-dimensional entanglement nonlinear film phase matching |
| title | High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| title_full | High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| title_fullStr | High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| title_full_unstemmed | High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| title_short | High-dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| title_sort | high dimensional orbital angular momentum entanglement from an ultrathin nonlinear film |
| topic | orbital angular momentum quantum entanglement high-dimensional entanglement nonlinear film phase matching |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.971360/full |
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