A Practical Multi-Protocol Collaborative QKD Networking Scheme
Abstract: With the advancement of quantum computing, the security of public key cryptography is under serious threat. To guarantee security in the quantum era, Quantum Key Distribution has become a competitive solution. QKD networks can be classified into measurement-device-dependent network and measurement-device-independent network. In measurement-device-dependent networks, the information is available for all trusted relays. This means that all trusted relays are strongly trusted relays that require strict control, which is difficult to realize. To address this issue, measurement-device-independent networks reduce the proportion of strongly trusted relay nodes by introducing untrusted relays. However, due to the higher key rate of measurement-device-dependent protocols over short distances, the communication capability of measurement-device-independent networks has a degradation compared to measurement-device-dependent networks. Therefore, how to reduce the dependence of QKD networks on strong trusted relays without significantly affecting the communication capability has become a major issue in the practicalization process of QKD networks. To address this issue, a novel Multi-Protocol Collaborative networking cell is proposed in this paper. The QKD network built by the MPC networking cell reduces the dependence on strongly trusted relays by combining the two protocols to introduce weak trusted relays while maintaining the high communication capacity. What's more, to further enhance the overall performance of the QKD network, an optimal topology design method is presented via the proposed flow-based mathematical model and optimization method. The simulation results show that the proposed scheme reduces the dependence on strongly trusted relays without a significant reduction in communication capability, our work holds great significance in promoting the practicalization of QKD networks.
- P. W. Shor, “Polynomial-time algorithms for prime factorization and discrete logarithms on a quantum computer,” SIAM review, vol. 41, no. 2, pp. 303–332, 1999.
- L. K. Grover, “Quantum mechanics helps in searching for a needle in a haystack,” Physical review letters, vol. 79, no. 2, p. 325, 1997.
- W. Heisenberg, “Über den anschaulichen inhalt der quantentheoretischen kinematik und mechanik,” Zeitschrift für Physik, vol. 43, no. 3-4, pp. 172–198, 1927.
- W. K. Wootters and W. H. Zurek, “A single quantum cannot be cloned,” Nature, vol. 299, no. 5886, pp. 802–803, 1982.
- C. E. Shannon, “Communication theory of secrecy systems,” The Bell system technical journal, vol. 28, no. 4, pp. 656–715, 1949.
- Y.-A. Chen, Q. Zhang, T.-Y. Chen, W.-Q. Cai, S.-K. Liao, J. Zhang, K. Chen, J. Yin, J.-G. Ren, Z. Chen et al., “An integrated space-to-ground quantum communication network over 4,600 kilometres,” Nature, vol. 589, no. 7841, pp. 214–219, 2021.
- J.-P. Chen, C. Zhang, Y. Liu, C. Jiang, W.-J. Zhang, Z.-Y. Han, S.-Z. Ma, X.-L. Hu, Y.-H. Li, H. Liu et al., “Twin-field quantum key distribution over a 511 km optical fibre linking two distant metropolitan areas,” Nature Photonics, vol. 15, no. 8, pp. 570–575, 2021.
- H. Liu, C. Jiang, H.-T. Zhu, M. Zou, Z.-W. Yu, X.-L. Hu, H. Xu, S. Ma, Z. Han, J.-P. Chen et al., “Field test of twin-field quantum key distribution through sending-or-not-sending over 428 km,” Physical Review Letters, vol. 126, no. 25, p. 250502, 2021.
- J.-P. Chen, C. Zhang, Y. Liu, C. Jiang, W. Zhang, X.-L. Hu, J.-Y. Guan, Z.-W. Yu, H. Xu, J. Lin et al., “Sending-or-not-sending with independent lasers: Secure twin-field quantum key distribution over 509 km,” Physical review letters, vol. 124, no. 7, p. 070501, 2020.
- S.-K. Liao, W.-Q. Cai, J. Handsteiner, B. Liu, J. Yin, L. Zhang, D. Rauch, M. Fink, J.-G. Ren, W.-Y. Liu et al., “Satellite-relayed intercontinental quantum network,” Physical review letters, vol. 120, no. 3, p. 030501, 2018.
- Q. Zhang, F. Xu, L. Li, N.-L. Liu, and J.-W. Pan, “Quantum information research in china,” Quantum Science and Technology, vol. 4, no. 4, p. 040503, 2019.
- Y. Cao, Y. Zhao, J. Zhang, and Q. Wang, “Software-defined heterogeneous quantum key distribution chaining: An enabler for multi-protocol quantum networks,” IEEE Communications Magazine, vol. 60, no. 9, pp. 38–44, 2022.
- G.-J. Fan-Yuan, F.-Y. Lu, S. Wang, Z.-Q. Yin, D.-Y. He, Z. Zhou, J. Teng, W. Chen, G.-C. Guo, and Z.-F. Han, “Measurement-device-independent quantum key distribution for nonstandalone networks,” Photonics Research, vol. 9, no. 10, pp. 1881–1891, 2021.
- Y. Cao, Y. Zhao, J. Li, R. Lin, J. Zhang, and J. Chen, “Mixed relay placement for quantum key distribution chain deployment over optical networks,” in 2020 European Conference on Optical Communications (ECOC). IEEE, 2020, pp. 1–4.
- Y. Wang, Q. Li, H. Mao, Q. Han, F. Huang, and H. Xu, “Topological optimization of hybrid quantum key distribution networks,” Optics Express, vol. 28, no. 18, pp. 26 348–26 358, 2020.
- X. Bonnetain, M. Naya-Plasencia, and A. Schrottenloher, “Quantum security analysis of aes,” IACR Transactions on Symmetric Cryptology, vol. 2019, no. 2, pp. 55–93, 2019.
- Q. Li, Y. Wang, H. Mao, J. Yao, and Q. Han, “Mathematical model and topology evaluation of quantum key distribution network,” Optics Express, vol. 28, no. 7, pp. 9419–9434, 2020.
- D. Gottesman, H.-K. Lo, N. Lutkenhaus, and J. Preskill, “Security of quantum key distribution with imperfect devices,” in International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings. IEEE, 2004, p. 136.
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