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Precise localization of a two-level atom by the superposition of two standing-wave fields |
JOSA B, Vol. 29, Issue 12, pp. 3299-3306 (2012)
http://dx.doi.org/10.1364/JOSAB.29.003299
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Abstract
A scheme is proposed to achieve one-dimensional localization of a two-level atom moving through a standing wave regime constructed by two classical standing-wave fields. Precise position information of the atom can be obtained by measuring resonant absorption of a weak coherent field probing the transition strongly driven by the resonant standing-wave fields. Behavior of atomic localization has been shown for symmetric superposition of the standing-wave fields arranged in two distinct configurations: (i) parallel and (ii) cross. In the cross-configuration, we have shown 100% detection probability of the atom within one wavelength range with the evolution of single localization peak in the sub-half-wavelength range due to the variation of spatial phase shift of one of the standing-wave fields. In case of nonresonant coupling of the atom with the standing-wave fields, a single localization peak in the sub-half-wavelength range can be obtained by changing the relative detuning of frequency of the probe field. For achieving high resolution single-peak localization of a two-level atom, the present scheme would be of great interest from the experimental point of view.
© 2012 Optical Society of America
OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(270.1670) Quantum optics : Coherent optical effects
ToC Category:
Quantum Optics
History
Original Manuscript: June 11, 2012
Revised Manuscript: September 20, 2012
Manuscript Accepted: September 28, 2012
Published: November 16, 2012
Citation
Bibhas Kumar Dutta, Pradipta Panchadhyayee, and Prasanta Kumar Mahapatra, "Precise localization of a two-level atom by the superposition of two standing-wave fields," J. Opt. Soc. Am. B 29, 3299-3306 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-12-3299
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