Interferometric measurement of micro-g acceleration with levitated atoms

Interferometric measurement of micro-g acceleration with levitated atoms
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悬浮原子微克加速度的干涉测量

DOI:
10.1088/1367-2630/ab1bbd
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发表时间:
2019
影响因子:
3.3
通讯作者:
Carli A
Carli A
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Carli A

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原子干涉仪的灵敏度通常受限于在地球引力场中自由落体的原子云的观测时间。目前,为了增加观测时间,人们做出了相当大的努力,例如在喷泉实验、降落塔和太空中。本文对磁悬浮技术在干涉精密测量中的应用进行了实验研究和讨论。我们采用具有可调谐相互作用的铯原子的玻色-爱因斯坦凝聚体和迈克尔逊干涉仪方案来检测微加速度。此外,我们还演示了与目前的落塔实验相当的观测次数为15次,我们研究了我们的力场曲率,并观察了相移元件在干涉仪路径中的影响。
The sensitivity of atom interferometers is usually limited by the observation time of a free falling cloud of atoms in Earth's gravitational field. Considerable efforts are currently made to increase this observation time, eg in fountain experiments, drop towers and in space. In this article, we experimentally study and discuss the use of magnetic levitation for interferometric precision measurements. We employ a Bose–Einstein condensate of cesium atoms with tuneable interaction and a Michelson interferometer scheme for the detection of micro-g acceleration. In addition, we demonstrate observation times of 1s, which are comparable to current drop-tower experiments, we study the curvature of our force field, and we observe the effects of a phase-shifting element in the interferometer paths.
DOI: 10.1109/cleoe.2011.5943462
发表时间: 2011
期刊: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
影响因子: --
作者:
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通讯作者: F. Biraben
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DOI: 10.1103/physreva.96.053622
发表时间: 2017
期刊: Physical Review A
影响因子: 2.9
作者:
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通讯作者: P. Griffin
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发表时间: 2017-05-01
影响因子: 8.6
作者:
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通讯作者: Kasevich, Mark A.