Quantum key distribution based on mid-infrared and telecom band two-color entanglement source
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866911988384268288 |
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| author | Li, Wu-Zhen Zhou, Chun Wang, Yang Chen, Li Chen, Ren-Hui Han, Zhao-Qi-Zhi Gao, Ming-Yuan Wang, Xiao-Hua Zheng, Di-Yuan Xie, Meng-Yu Li, Yin-Hai Zhou, Zhi-Yuan Bao, Wan-Su Shi, Bao-Sen |
| author_facet | Li, Wu-Zhen Zhou, Chun Wang, Yang Chen, Li Chen, Ren-Hui Han, Zhao-Qi-Zhi Gao, Ming-Yuan Wang, Xiao-Hua Zheng, Di-Yuan Xie, Meng-Yu Li, Yin-Hai Zhou, Zhi-Yuan Bao, Wan-Su Shi, Bao-Sen |
| contents | Due to the high noise caused by solar background radiation, the existing satellite-based free-space quantum key distribution (QKD) experiments are mainly carried out at night, hindering the establishment of a practical all-day real-time global-scale quantum network. Given that the 3-5 μm mid-infrared (MIR) band has extremely low solar background radiation and strong scattering resistance, it is one of the ideal bands for free-space quantum communication. Here, firstly, we report on the preparation of a high-quality MIR (3370 nm) and telecom band (1555 nm) two-color polarization-entangled photon source, then we use this source to realize a principle QKD based on free-space and fiber hybrid channels in a laboratory. The theoretical analysis clearly shows that a long-distance QKD over 500 km of free-space and 96 km of fiber hybrid channels can be reached simultaneously. This work represents a significant step toward developing all-day global-scale quantum communication networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_07552 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum key distribution based on mid-infrared and telecom band two-color entanglement source Li, Wu-Zhen Zhou, Chun Wang, Yang Chen, Li Chen, Ren-Hui Han, Zhao-Qi-Zhi Gao, Ming-Yuan Wang, Xiao-Hua Zheng, Di-Yuan Xie, Meng-Yu Li, Yin-Hai Zhou, Zhi-Yuan Bao, Wan-Su Shi, Bao-Sen Quantum Physics Due to the high noise caused by solar background radiation, the existing satellite-based free-space quantum key distribution (QKD) experiments are mainly carried out at night, hindering the establishment of a practical all-day real-time global-scale quantum network. Given that the 3-5 μm mid-infrared (MIR) band has extremely low solar background radiation and strong scattering resistance, it is one of the ideal bands for free-space quantum communication. Here, firstly, we report on the preparation of a high-quality MIR (3370 nm) and telecom band (1555 nm) two-color polarization-entangled photon source, then we use this source to realize a principle QKD based on free-space and fiber hybrid channels in a laboratory. The theoretical analysis clearly shows that a long-distance QKD over 500 km of free-space and 96 km of fiber hybrid channels can be reached simultaneously. This work represents a significant step toward developing all-day global-scale quantum communication networks. |
| title | Quantum key distribution based on mid-infrared and telecom band two-color entanglement source |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2408.07552 |