A1 Refereed original research article in a scientific journal

Three-dimensional atom localization by laser fields in a four-level tripod system




AuthorsVladimir S. Ivanov, Yuri V. Rozhdestvensky, Kalle-Antti Suominen

PublisherAMER PHYSICAL SOC

Publication year2014

JournalPhysical Review A

Journal name in sourcePHYSICAL REVIEW A

Journal acronymPHYS REV A

Article number063802

Volume90

Issue6

Number of pages5

ISSN1050-2947

DOIhttps://doi.org/10.1103/PhysRevA.90.063802

Web address http://journals.aps.org/pra/abstract/10.1103/PhysRevA.90.063802


Abstract

We present a scheme for high-precision three-dimensional (3D) localization by the measurement of the atomic-level population. The scheme is applied to a four-level tripod-type atom coupled by three strong standing waves and a probe running wave. As a result, the atom can be localized in volumes that are substantially smaller than a cubic optical wavelength, which is achieved by the increase of standing-wave intensities. The upper-level distribution depends crucially on the atom-field coupling and it forms 3D periodic structures composed of spheres, hourglasses, bowls, donuts, or deformed barrels.



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