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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
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芯片集成量子签名网络超过200公里.

Yongqiang Du1, Bing-Hong Li2, Xin Hua3

  • 1Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning, 530004, China.

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这项研究引入了基于芯片的量子数字签名 (QDS) 网络,使安全通信更容易获得. 这种新型系统使用集成芯片在量子网络中进行实用,大规模的部署.

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科学领域:

  • 量子信息科学 量子信息科学
  • 网络安全 网络安全
  • 综合光子学 综合光子学

背景情况:

  • 量子数字签名 (QDS) 为数据完整性,真实性和不可否认性提供信息理论上的安全性.
  • 现有的QDS系统受到昂贵,庞大的光学设备的限制,阻碍了可扩展性和网络重新配置.

研究的目的:

  • 开发和验证一个实用的基于芯片的量子数字签名网络.
  • 降低QDS系统的成本和复杂性,以便广泛采用.

主要方法:

  • 开发了一种基于芯片的QDS网络架构,用于复杂的测量设备和低成本用户发射器的中央继电器.
  • 使用集成的编码器和解码器芯片实现了三节点网络.
  • 使用了一个1-诱状态一次性通用哈希QDS协议.

主要成果:

  • 在200公里光纤距离上演示了一个功能性基于芯片的QDS网络.
  • 实现了每秒0.0414个签名的最大签名率,用于1Mbit消息.
  • 超过了以前最先进的QDS实验的性能.

结论:

  • 验证了基于芯片的QDS网络的可行性.
  • 铺平了QDS在现有光纤基础设施中大规模部署和集成的道路.
  • 实现了更容易获得和安全的量子通信解决方案.