Document Detail

Combining red and blue-detuned optical potentials to form a Lamb-Dicke trap for a single neutral atom.
MedLine Citation:
PMID:  22418129     Owner:  NLM     Status:  In-Data-Review    
We propose and demonstrate a scheme for strong radial confinement of a single <sup>87</sup>Rb atom by a bichromatic far-off resonance optical dipole trap (BFORT). The BFORT is composed of a blue-detuned Laguerre-Gaussian LG01 beam and a red-detuned Gaussian beam. The atomic oscillation frequency measurement shows that the effective trapping dimension is much sharper than that from a diffraction-limited microscopic objective. Theory shows that the added scattering rate due to imposing blue-detuned light is negligible when the temperature of the single atoms is close to ground state temperature. By carrying out sub-Doppler cooling, the mean energy of single atoms trapped in the BFORT is reduced to 15 ± 1 μK. The corresponding mean quantum number of radial vibration n is about 1.65, which satisfies the Lamb-Dicke regime. We conclude that the BFORT is a suitable Lamb-Dicke trap for further cooling a single neutral atom down to the ground state and for further application in quantum information processing.
Xiaodong He; Shi Yu; Peng Xu; Jin Wang; Mingsheng Zhan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics express     Volume:  20     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-03-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3711-24     Citation Subset:  IM    
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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