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Optoelectrical cooling of polar molecules to sub-millikelvin temperatures
- Source :
- Phys. Rev. Lett. 116, 063005 (2016)
- Publication Year :
- 2015
-
Abstract
- We demonstrate direct cooling of gaseous formaldehyde (H2CO) to the microkelvin regime. Our approach, optoelectrical Sisyphus cooling, provides a simple dissipative cooling method applicable to electrically trapped dipolar molecules. By reducing the temperature by three orders of magnitude and increasing the phase-space density by a factor of ~$10^4$ we generate an ensemble of $3\cdot10^5$ molecules with a temperature of about 420\mu K, populating a single rotational state with more than 80% purity.
- Subjects :
- Physics - Atomic Physics
Physics - Chemical Physics
Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 116, 063005 (2016)
- Publication Type :
- Report
- Accession number :
- edsarx.1511.09427
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.116.063005