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高Q磁悬浮和控制超导微球在米基尔文温度的超导微球
J Hofer1,2, R Gross3,4,5, G Higgins2,6
1Faculty of Physics, Vienna Center for Quantum Science and Technology (VCQ), University of Vienna, A-1090 Vienna, Austria.
Physical review letters
|August 11, 2023
概括
研究人员在磁陷中悬浮了一个超导球体,为量子物理测试获得了高质量因子. 这种设置为使用大质量物体探索量子现象提供了一个新的平台.
科学领域:
- 量子物理学的量子物理学
- 超导电性 超导电性 超导电性
- 实验物理学的实验物理.
背景情况:
- 超导物体为量子实验提供了独特的特性.
- 悬浮技术对于隔离敏感量子系统至关重要.
- 在巨大的物体中获得高质量因子是长时间连贯性的关键.
研究的目的:
- 在磁陷中悬浮一个超导球体.
- 为了描述悬浮球体的运动和质量因素.
- 为高质量量子物理实验建立一个平台.
主要方法:
- 使用反海尔姆霍尔茨磁陷,对100微米超导-锡球体进行起.
- 使用直流超导量子干扰装置 (SQUID) 和光学方法监测质心运动.
- 在稀释冰箱 (15mK) 中实施冷振动隔离系统.
- 演示3D磁反控制的方法.
主要成果:
- 实现了5.6微克超导体球体的悬浮.
- 测量了高达2.6×10^7的质量因子,用于球体运动.
- 在200Hz时减弱了约7个数量级的环境振动.
- 展示了精确的3D磁反控制.
结论:
- 悬浮的超导球为量子物理研究提供了一个有前途的平台.
- 该系统可以在高质量状态下探索量子现象.
- 获得的高质量因子和低温支持量子实验的长连贯时间.
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