Subwavelength atom localization via coherent population trapping

Agarwal, G. S. ; Kapale, K. T. (2006) Subwavelength atom localization via coherent population trapping Journal of Physics B: Atomic, Molecular and Optical Physics, 39 (17). pp. 3437-3446. ISSN 0953-4075

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We present an atom localization scheme based on coherent population trapping. We consider atomic transitions in a Lambda configuration where the control field is a standing-wave field. The probe field and the control field produce coherence between the two ground states and prepare the atom in a pure state. We show that the population in one of the ground states has the same fringe pattern as produced by a Fabry-Perot interferometer and thus measurement of this population would localize the atom. Interestingly enough the role of the cavity finesse is played by the ratio of the intensities of the pump and probe. This is in fact the reason for obtaining extreme subwavelength localization.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
ID Code:90342
Deposited On:09 May 2012 03:55
Last Modified:09 May 2012 03:55

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