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Hybrid quantum key distribution network
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DOI：10.1007/s11432-022-3509-6.png)
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Quantum key distribution (QKD) is now moving toward a scalable and secure QKD network, which establishes secret keys among network users. The continuous-variable (CV) and discrete-variable (DV) QKD systems are currently being developed in parallel and are all used in QKD networks. We propose here a hybrid QKD network, in which the CV QKD system is used to build metropolitan QKD networks, and the DV QKD system is used to connect metropolitan QKD networks. The hybrid QKD network takes advantage of high secret key rates for CV QKD systems and long distance for DV QKD systems. We also present a feasible hybrid measurement-device-independent (MDI) QKD network, which combines both CV and DV MDI QKD systems. The presented hybrid QKD networks meet the low cost and compact requirement of a realistic QKD network and provide a feasible solution for future real QKD networks by combining the advantages of both CV and DV QKD systems.
Keyword:
quantum network
quantum key distribution
hybrid quantum information
continuous variable
discrete variable
期刊
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7.6
论文数:
4.9K
被引数:
8.9K
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