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Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap

Li, Y.; Wu, J.; Feng, G.; Nute, J.; Piano, Samanta; Hackermüller, L.; Ma, J.; Xiao, L.; Jia, S.

Authors

Y. Li

J. Wu

G. Feng

J. Nute

J. Ma

L. Xiao

S. Jia



Abstract

We report enhanced three-dimensional degenerated Raman sideband cooling (3D DRSC) of caesium (Cs) atoms in a standard single-cell vapour-loaded magneto-optical trap. Our improved scheme involves using a separate repumping laser and optimized lattice detuning. We load 1.5 × 107 atoms into the Raman lattice with a detuning of −15.5 GHz (to the ground F = 3 state). Enhanced 3D DRSC is used to cool them from 60 µK to 1.7 µK within 12 ms and the number of obtained atoms is about 1.2 × 107. A theoretical model is proposed to simulate the measured number of trapped atoms. The result shows good agreement with the experimental data. The technique paves the way for loading a large number of ultracold Cs atoms into a crossed dipole trap and efficient evaporative cooling in a single-cell system.

Journal Article Type Article
Publication Date Mar 31, 2015
Journal Laser Physics Letters
Print ISSN 1612-2011
Electronic ISSN 1612-202X
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 12
Issue 5
Article Number 055501
APA6 Citation Li, Y., Wu, J., Feng, G., Nute, J., Piano, S., Hackermüller, L., …Jia, S. (2015). Enhanced Raman sideband cooling of caesium atoms in a vapour-loaded magneto-optical trap. Laser Physics Letters, 12(5), https://doi.org/10.1088/1612-2011/12/5/055501
DOI https://doi.org/10.1088/1612-2011/12/5/055501
Keywords degenerated Raman sideband cooling, lattice, detuning
Publisher URL http://iopscience.iop.org/article/10.1088/1612-2011/12/5/055501/meta
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information Y Li et al 2015 Laser Phys. Lett. 12 055501

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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