An ultracold molecular beam for testing fundamental physics
An ultracold molecular beam for testing fundamental physics
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DOI：
10.1088/2058-9565/ac107e
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发表时间：
2021-04
影响因子：
6.7
通讯作者：
X. Alauze;J. Lim;M. Trigatzis;S. Swarbrick;F. J. Collings;N. Fitch;B. Sauer;M. Tarbutt
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文献类型：
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作者：
X. Alauze;J. Lim;M. Trigatzis;S. Swarbrick;F. J. Collings;N. Fitch;B. Sauer;M. Tarbutt
我们利用二维横向激光冷却产生了YbF分子的超冷光束。通过实验和数值模拟，研究了极化组态、激光强度、激光失谐和外加磁场对冷却的影响。光束的超冷部分包含超过2× 10个分子，温度低于200 μK，冷却使光束的亮度提高了300倍。这种方法可以提高用分子来测试基础物理的实验的精度。特别地，该光束适合于测量电子电偶极矩，其统计精度优于10−30 e cm。
We use two-dimensional transverse laser cooling to produce an ultracold beam of YbF molecules. Through experiments and numerical simulations, we study how the cooling is influenced by the polarization configuration, laser intensity, laser detuning and applied magnetic field. The ultracold part of the beam contains more than 2× 10 molecules and has a temperature below 200 μK, and the cooling yields a 300-fold increase in the brightness of the beam. The method can improve the precision of experiments that use molecules to test fundamental physics. In particular, the beam is suitable for measuring the electron electric dipole moment with a statistical precision better than 10−30 e cm.