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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

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The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
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相关实验视频

Updated: Sep 10, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

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阶段偏差的安德里夫衍射格子

Magnus R Lykkegaard1, Anders Enevold Dahl1, Tyler Lindemann2,3

  • 1University of Copenhagen, Niels Bohr Institute, Center for Quantum Devices, DK-2100 Copenhagen, Denmark.

Physical review letters
|August 27, 2025
PubMed
概括
此摘要是机器生成的。

研究人员使用多个Andreev散射器创建了一个模拟光学衍射的超导半导体电路. 这种新的方法允许调节相位差异,开辟了量子设备研究的新途径.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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科学领域:

  • 凝聚物质物理学
  • 量子光学
  • 超导电路

背景情况:

  • 光学衍射模式是由波源之间的相差引起的,这种现象通常在网格或多裂口罩中观察到.
  • 超导体半导体混合电路为探索安德里埃夫散射等量子现象提供了一个平台.
  • 控制相差对于操纵波干扰和衍射模式至关重要.

研究的目的:

  • 在超导体半导体混合电路中实验实现光学衍射的模拟.
  • 为了研究从平行散射器数组中多个Andreev散射的现象.
  • 探索在这样的电路中控制散射器之间的相差的方法.

主要方法:

  • 制造具有多个并行安德里埃夫散射器的超导体半导体混合电路.
  • 使用远程超导来设置散射器之间的相位差异.
  • 对这些阵列产生的局部和非局部衍射模式的实验研究.
  • 实验结果与多 Andreev 散射的理论模型进行比较.

主要成果:

  • 在超导体半导体系统中成功实现类似光学衍射的衍射模式.
  • 对数组具有不同数量的Andreev散射器 (2,3,4和10) 的明显衍射模式的观察.
  • 实验结果与多重安德里耶夫散射的发展理论有很好的一致性.
  • 通过结合带电流的水龙头来展示散射器的单个相位控制.

结论:

  • 超导体半导体电路中的多重安德里埃夫散射可以复制光学衍射现象.
  • 由超导控制的相位差异决定了所得到的衍射模式.
  • 能够单独控制散射器阶段为先进的量子设备设计和操纵提供了潜力.