Cold atom physics has played a crucial role in advancing precision measurement techniques and has also paved the way for the exploration of cold molecule physics.Over the past two decades,significant strides have been made in laser cooling of molecules,allowing various species of molecules to be cooled and trapped.These advancements have greatly enhanced phase-space density and extended interaction times,providing ideal samples for precision measurement.For certain quantities,especially those related to electric fields,precision measurements based on cold molecules can achieve unprecedented accuracy.This paper first outlines a methodology for precision measurement of the electron's permanent electric dipole moment using molecules.It then,using barium monofluoride as an example,discusses the underlying theory,techniques,and recent developments in the laser cooling and trapping of polar molecules.Finally,the paper explores the potential for cold molecules in other areas of precision measurement.
关键词
激光冷却/冷分子/精密测量/电子永久电偶极矩
Key words
laser cooling/cold molecules/precise measurement/electron electric dipole moment
维普
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