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- W4311409675 abstract "Quantum conference key agreement is an important cryptographic primitive for future quantum network. Realizing this primitive requires high-brightness and robust multiphoton entanglement sources, which is challenging in experiment and unpractical in application because of limited transmission distance caused by channel loss. Here we report a measurement-device-independent quantum conference key agreement protocol with enhanced transmission efficiency over lossy channel. With spatial multiplexing nature and adaptive operation, our protocol can break key rate bounds on quantum communication over quantum network without quantum memory. Compared with previous work, our protocol shows superiority in key rate and transmission distance within the state-of-the-art technology. Furthermore, we analyse the security of our protocol in the composable framework and evaluate its performance in the finite-size regime to show practicality. Based on our results, we anticipate that our protocol will play an indispensable role in constructing multipartite quantum network." @default.
- W4311409675 created "2022-12-26" @default.
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- W4311409675 date "2022-12-10" @default.
- W4311409675 modified "2023-10-06" @default.
- W4311409675 title "Breaking universal limitations on quantum conference key agreement without quantum memory" @default.
- W4311409675 doi "https://doi.org/10.48550/arxiv.2212.05226" @default.
- W4311409675 hasPublicationYear "2022" @default.
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