High-rate quantum digital signatures network with integrated silicon photonics
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866929416078098432 |
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| author | Du, Yongqiang Li, Bing-Hong Hua, Xin Cao, Xiao-Yu Zhao, Zhengeng Xie, Feng Zhang, Zhenrong Yin, Hua-Lei Xiao, Xi Wei, Kejin |
| author_facet | Du, Yongqiang Li, Bing-Hong Hua, Xin Cao, Xiao-Yu Zhao, Zhengeng Xie, Feng Zhang, Zhenrong Yin, Hua-Lei Xiao, Xi Wei, Kejin |
| contents | The development of quantum networks is paramount towards practical and secure communications. Quantum digital signatures (QDS) offer an information-theoretically secure solution for ensuring data integrity, authenticity, and non-repudiation, rapidly growing from proof-of-concept to robust demonstrations. However, previous QDS systems relied on expensive and bulky optical equipment, limiting large-scale deployment and reconfigurable networking construction. Here, we introduce and verify a chip-based QDS network, placing the complicated and expensive measurement devices in the central relay while each user needs only a low-cost transmitter. We demonstrate the network with a three-node setup using an integrated encoder chip and decoder chip. By developing a 1-decoy-state one-time universal hash-QDS protocol, we achieve a maximum signature rate of 0.0414 times per second for a 1 Mbit file over fiber distances up to 200 km, surpassing all current state-of-the-art QDS experiments. This study validates the feasibility of chip-based QDS, paving the way for large-scale deployment and integration with existing fiber infrastructure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_07513 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | High-rate quantum digital signatures network with integrated silicon photonics Du, Yongqiang Li, Bing-Hong Hua, Xin Cao, Xiao-Yu Zhao, Zhengeng Xie, Feng Zhang, Zhenrong Yin, Hua-Lei Xiao, Xi Wei, Kejin Quantum Physics The development of quantum networks is paramount towards practical and secure communications. Quantum digital signatures (QDS) offer an information-theoretically secure solution for ensuring data integrity, authenticity, and non-repudiation, rapidly growing from proof-of-concept to robust demonstrations. However, previous QDS systems relied on expensive and bulky optical equipment, limiting large-scale deployment and reconfigurable networking construction. Here, we introduce and verify a chip-based QDS network, placing the complicated and expensive measurement devices in the central relay while each user needs only a low-cost transmitter. We demonstrate the network with a three-node setup using an integrated encoder chip and decoder chip. By developing a 1-decoy-state one-time universal hash-QDS protocol, we achieve a maximum signature rate of 0.0414 times per second for a 1 Mbit file over fiber distances up to 200 km, surpassing all current state-of-the-art QDS experiments. This study validates the feasibility of chip-based QDS, paving the way for large-scale deployment and integration with existing fiber infrastructure. |
| title | High-rate quantum digital signatures network with integrated silicon photonics |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2407.07513 |