Field test of mode-pairing quantum key distribution
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866913485274742784 |
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| author | Zhu, Hao-Tao Huang, Yizhi Pan, Wen-Xin Zhou, Chao-Wu Tang, Jianjun He, Hong Cheng, Ming Jin, Xiandu Zou, Mi Tang, Shibiao Ma, Xiongfeng Chen, Teng-Yun Pan, Jian-Wei |
| author_facet | Zhu, Hao-Tao Huang, Yizhi Pan, Wen-Xin Zhou, Chao-Wu Tang, Jianjun He, Hong Cheng, Ming Jin, Xiandu Zou, Mi Tang, Shibiao Ma, Xiongfeng Chen, Teng-Yun Pan, Jian-Wei |
| contents | Quantum key distribution is a cornerstone of quantum technology, offering information-theoretical secure keys for remote parties. With many quantum communication networks established globally, the mode-pairing protocol stands out for its efficacy over inter-city distances using simple setups, emerging as a promising solution. In this study, we employ the mode-pairing scheme into existing inter-city fiber links, conducting field tests across distances ranging from tens to about a hundred kilometers. Our system achieves a key rate of $1.217$ kbit/s in a $195.85$ km symmetric link and $3.089$ kbit/s in a $127.92$ km asymmetric link without global phase locking. The results demonstrate that the mode-pairing protocol can achieve key rates comparable to those of a single quantum link between two trusted nodes on the Beijing-Shanghai backbone line, effectively reducing the need for half of the trusted nodes. These field tests confirm the mode-pairing scheme's adaptability, efficiency, and practicality, positioning it as a highly suitable protocol for quantum networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_09339 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Field test of mode-pairing quantum key distribution Zhu, Hao-Tao Huang, Yizhi Pan, Wen-Xin Zhou, Chao-Wu Tang, Jianjun He, Hong Cheng, Ming Jin, Xiandu Zou, Mi Tang, Shibiao Ma, Xiongfeng Chen, Teng-Yun Pan, Jian-Wei Quantum Physics Quantum key distribution is a cornerstone of quantum technology, offering information-theoretical secure keys for remote parties. With many quantum communication networks established globally, the mode-pairing protocol stands out for its efficacy over inter-city distances using simple setups, emerging as a promising solution. In this study, we employ the mode-pairing scheme into existing inter-city fiber links, conducting field tests across distances ranging from tens to about a hundred kilometers. Our system achieves a key rate of $1.217$ kbit/s in a $195.85$ km symmetric link and $3.089$ kbit/s in a $127.92$ km asymmetric link without global phase locking. The results demonstrate that the mode-pairing protocol can achieve key rates comparable to those of a single quantum link between two trusted nodes on the Beijing-Shanghai backbone line, effectively reducing the need for half of the trusted nodes. These field tests confirm the mode-pairing scheme's adaptability, efficiency, and practicality, positioning it as a highly suitable protocol for quantum networks. |
| title | Field test of mode-pairing quantum key distribution |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2403.09339 |