Phys. Rev. A 81, 033809 (2010) [7 pages]Two-dimensional atom localization in a four-level tripod system in laser fieldsReceived 5 September 2009; published 8 March 2010 We propose a scheme for two-dimensional (2D) atom localization in a four-level tripod system under an influence of two orthogonal standing-wave fields. Position information of the atom is retained in the atomic internal states by an additional probe field either of a standing or of a running wave. It is shown that the localization factors depend crucially on the atom-field coupling that results in such spatial structures of populations as spikes, craters, and waves. We demonstrate a high-precision localization due to measurement of population in the upper state or in any ground state. © 2010 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.81.033809
DOI:
10.1103/PhysRevA.81.033809
PACS:
42.50.Gy, 42.50.Nn, 42.50.Wk, 42.50.St
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