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Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
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Sharing information, concepts, and emotions to foster mutual understanding is communication. The sender, recipient, and transaction must be considered in this manner. The sender is the person who shares the message, the recipient is the person who receives and understands the message, and the transaction is the method used to deliver the message and the variables that affect the communication's context and surroundings. The nurse-client connection is built on therapeutic communication.
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带有集成光子学的大型量子通信网络.

Yun Zheng1, Hanyu Wang2, Xinyu Jia2,3

  • 1State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, China. zhengyun96@pku.edu.cn.

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概括

这项研究展示了一个可扩展的集成光学量子密钥分配 (QKD) 网络. 这种新的系统使长距离的安全通信成为可能,为大型量子网络铺平了道路.

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科学领域:

  • 量子通信和密码学 量子通信和密码学
  • 综合光子学 综合光子学
  • 量子网络是一个量子网络.

背景情况:

  • 量子密钥分布 (QKD) 提供了可证明的安全通信,但在扩展到大型网络和长距离时面临挑战.
  • 现有的QKD网络架构,如可信节点和点对多点系统,在中介和距离方面存在局限性.
  • 双场量子密钥分布 (TF-QKD) 增强了通信距离,但需要可扩展的量子设备来实现网络.

研究的目的:

  • 展示一个可扩展和可靠的集成光学TF-QKD网络.
  • 克服现有的QKD网络在规模和距离方面的局限性.
  • 建立一个可行的途径,以大规模的量子网络,使用大规模生产的组件.

主要方法:

  • 开发了一个集成光学TF-QKD网络,其中包含20个客户端QKD发射器芯片和一个服务器端光学微组芯片.
  • 使用微来产生超低噪声连贯频率,作为客户端芯片的种子和参考.
  • 在20个客户端芯片中使用10个波长复合通道对对实施QKD,实现相锁和密钥准备.

主要成果:

  • 实现了3,700公里的网络能力 (客户端对 × 通信距离),单个链接超过了无重复器在370公里的螺旋纤维上.
  • 证明了服务器端微组合芯片和客户端QKD发射器芯片的晶圆尺度可重现性.
  • 展示了集成光学TF-QKD网络的特殊可扩展性和可靠性.

结论:

  • 集成光学TF-QKD网络为远距离量子通信提供了可扩展和可靠的解决方案.
  • 集成光子学的批量制造性,成本效益和高可扩展性的结合对于实现大规模量子网络至关重要.
  • 这种原理证明演示代表了朝着实际,大规模量子网络部署迈出的重要一步.