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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.

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

Journal Article Type Article
Acceptance Date Mar 11, 2015
Publication Date Mar 31, 2015
Deposit Date Oct 2, 2017
Publicly Available Date Oct 2, 2017
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
DOI https://doi.org/10.1088/1612-2011/12/5/055501
Keywords degenerated Raman sideband cooling, lattice, detuning
Public URL http://eprints.nottingham.ac.uk/id/eprint/46911
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.nottingham.ac.uk/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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