期刊
NEW JOURNAL OF PHYSICS
卷 22, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/ab687b
关键词
laser cooling; molecular laser cooling; ultracold molecules; precision measurements; electron electric dipole moment
资金
- Hutzler group at Caltech
- Heising-Simons Foundation
- NSFGRFP
- Keck Foundation
Doppler and Sisyphus cooling of (YbOH)-Yb-174 are achieved and studied. This polyatomic molecule has high sensitivity to physics beyond the Standard Model and represents a new class of species for future high-precision probes of new T-violating physics. The transverse temperature of the YbOH beam is reduced by nearly two orders of magnitude to < 600 mu K and the phase-space density is increased by a factor of > 6 via Sisyphus cooling. We develop a full numerical model of the laser cooling of YbOH and find excellent agreement with the data. We project that laser cooling and magneto-optical trapping of long-lived samples of YbOH molecules are within reach and these will allow a high sensitivity probe of the electric dipole moment of the electron. The approach demonstrated here is easily generalized to other isotopologues of YbOH that have enhanced sensitivity to other symmetry violating electromagnetic moments.
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