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对于量子网络的低噪音光机械单声子-光子转换.

Liu Chen1, Alexander Rolf Korsch1,2,3, Cauê Moreno Kersul4

  • 1Kavli Institute of Nanoscience, Department of Quantum Nanoscience, Delft University of Technology, Delft, The Netherlands.

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概括
此摘要是机器生成的。

研究人员开发了一种准二维的光机械晶体 (OMC),以克服量子网络中的热噪声. 这项创新能够通过声子-光子转换产生高纯度的单光子,从而推进量子通信.

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科学领域:

  • 量子光学就是量子光学.
  • 纳米技术纳米技术
  • 固态物理 固态物理

背景情况:

  • 光学机械晶体 (OMC) 与光学光子接口机械模式,用于量子信息分布.
  • OMC中的热力学噪声阻碍了可扩展量子网络的发展.

研究的目的:

  • 为了克服量子网络应用的 OMC 中的热噪声限制.
  • 使用一种新的准二维OMC设计,产生高纯度的单光子.

主要方法:

  • 使用了一种准二维的光机械晶体 (OMC).
  • 通过单个声子-光子转换生成单个光子.
  • 执行了汉伯里布朗-特威斯和香港-乌-曼德尔干扰实验.
  • 使用双光子干扰测量时间波包.

主要成果:

  • 实现了低热噪声和高纯度的单光子生成 (g(2)0)=0.350.08+0.10).
  • 在1.43公里光纤延迟后,证明了光子不可辨别性和连贯性 (V = 0.52 ± 0.15).
  • 对光学机械生成的单光子观察到低至10 MHz的狭窄带宽.

    • 结论:

    • 准二维的OMC有效地抑制了热噪声,使高质量的单光子产生成为可能.
    • 结果支持多节量子网络的发展,以及机械振荡器和电信量子发射器之间的混合纠.