Dual peaks evolving into a single-peak for sub-wavelength 2-D atom localization in a V-type atomic system

•Increasing resolution for 2-D atom localization.•A single-peak distribution within the half-wavelength domain.•Flexible external parameters manipulation for the 2-D atom localization. The atom localization of a V-type atomic system is discussed by the detunings associated with the probe and the two...

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Bibliographic Details
Published in:Chinese journal of physics (Taipei) 2017-06, Vol.55 (3), p.1055-1061
Main Authors: Zhao, Shun-Cai, Li, Xin, Yang, Ping, Wu, Qi-Xuan
Format: Article
Language:English
Subjects:
Dual peaks evoluting into single-peak
Sub-wavelength 2-D atom localization
V-type atomic system
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Summary:•Increasing resolution for 2-D atom localization.•A single-peak distribution within the half-wavelength domain.•Flexible external parameters manipulation for the 2-D atom localization. The atom localization of a V-type atomic system is discussed by the detunings associated with the probe and the two orthogonal standing-wave fields, and by the spontaneously generated coherence (SGC). Within the half-wavelength domain in the 2-dimensional (2-D) plane, the atom localization depicted by the probe dual absorption peaks is achieved when the detunings are tuned. However, the dual peaks change into a single-peak when the SGC arises. The single-peak 2-D localization demonstrated the advantage for atom localization achieved by the flexible manipulating parameters in our scheme.
ISSN:0577-9073
DOI:10.1016/j.cjph.2017.02.019