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相关概念视频

Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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相关实验视频

Updated: Jun 11, 2025

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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超过7.0公里的非局部光子量子门.

Xiao Liu1,2, Xiao-Min Hu1,2,3, Tian-Xiang Zhu1,2

  • 1CAS Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, China.

Nature communications
|October 2, 2024
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概括

研究人员使用量子记忆和光纤技术在两个距离7.0公里的节点之间展示了非局部量子门. 这一突破使得大规模分布式量子计算能够跨越大都市距离.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Last Updated: Jun 11, 2025

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Published on: May 30, 2014

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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科学领域:

  • 量子信息科学 量子信息科学
  • 量子网络是一个量子网络.
  • 量子计算是一种量子计算.

背景情况:

  • 量子网络需要远距离纠和量子比特控制来实现分布式量子计算.
  • 目前的非局部量子门仅限于短距离 (几十米).

研究的目的:

  • 为了证明非本地光子量子门在大都会规模的距离 (7.0公里).
  • 为大规模分布式量子网络建立基础元素.

主要方法:

  • 在复合量子内存中利用静态量子比特.
  • 在电信波长上使用飞行量子比特.
  • 在现场部署的光纤上实施了主动的前控制.

主要成果:

  • 成功演示了由7.0公里隔开的节点之间的非局部量子门.
  • 通过Deutsch-Jozsa和远程量子相位估计算法实现了量子平行论.

结论:

  • 在大都市距离上的量子门的原理证明.
  • 用现有的光纤基础设施为大型量子网络奠定了基础.