Laser Cooled YbF Molecules for Measuring the Electron's Electric Dipole Moment

作者：Lim, J.; Almond, J. R.; Trigatzis, M. A.; Devlin, J. A.; Fitch, N. J.; Sauer, B. E.; Tarbutt, M. R.^*; Hinds, E. A.

来源：Physical Review Letters, 2018, 120(12): 123201.

DOI：10.1103/PhysRevLett.120.123201

• DIATOMIC MOLECULE
• DOPPLER LIMIT
• SPECTROSCOPY
• (YBF)-YB-174
• STATES
• ATOMS

We demonstrate one-dimensional sub-Doppler laser cooling of a beam of YbF molecules to 100 mu K. This is a key step towards a measurement of the electron's electric dipole moment using ultracold molecules. We compare the effectiveness of magnetically assisted and polarization-gradient sub-Doppler cooling mechanisms. We model the experiment and find good agreement with our data.

• 出版日期2018-3-22