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Updated: Jan 10, 2026

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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基于纠的量子通道与DWDM经典通道在空心纤维上的共存,在一个四节点量子通信网络中
Marcus J Clark1,2, Obada Alia1,3, Sima Bahrani1
1High Performance Networks Group & School of Electrical, Electronic, and Mechanical Engineering, University of Bristol, Bristol, UK.
概括
这项研究展示了一个四个用户的量子网络,可以在11.5公里长的光纤上实现同时进行经典和量子通信. 它实现了高保真度量子密钥分布,在55小时内稳定的秘密密钥率.
科学领域:
- 量子通信是一种量子通信.
- 光学网络的光学网络
- 量子密码学 量子密码学
背景情况:
- 量子网络需要强大的道来进行量子和经典数据传输.
- 将量子通道与现有光纤基础设施集成,带来了重大的技术挑战.
- 之前的研究已经探索了有限的共存场景,需要进一步研究多道集成.
研究的目的:
- 在实用的量子网络中实验证明多个量子通道与经典通道的共存.
- 在这个集成网络中评估量子密钥分布 (QKD) 的性能和稳定性.
- 评估与量子通信并发的高速数据传输的可行性.
主要方法:
- 利用11.5公里的空心嵌套反共振无节点光纤用于量子和经典通道传输.
- 实现三个基于纠的量子通道和四个运载级的经典光学通道,在C频段运行.
- 实现同步传输,通道距离为1.2nm,总共存在功率为-3dBm.
- 建立一个四节点全网格量子网络拓.
主要成果:
- 成功演示了三个量子通道和四个经典通道在11.5公里长的专用纤维上的共存.
- 在古典频道与量子频道一起实现了800 Gbps的总传输速率.
- 建立了量子密钥分布,钟状态忠实度高达90.0 ± 0.8%.
- 在55小时内对所有网络链路的秘密密钥率的被动保存.
结论:
- 实验设置证明了将多个量子和经典通信通道集成到单一光纤基础设施中的可行性.
- 实现的高保真性和稳定的秘密密钥率证实了这种量子网络在安全通信方面的实际潜力.
- 这项工作为可扩展和高性能量子网络铺平了道路,支持安全的密钥分配和高速数据传输.
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