We propose a scheme for the two-dimensional (2D) localization of an atom in a four-level Y-type atomic system. By applying two orthogonal standing-wave fields, the atoms can be localized at some special positions, leading to the formation of sub-wavelength 2D periodic spatial distributions. The localization peak position and number as well as the conditional position probability can be controlled by the intensities and detunings of optical fields.
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Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education,Anhui University
School of Mathematics and Physics,Anhui Polytechnic UniversityKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education,Anhui University
葛强
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阮于华
俞本立
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Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education,Anhui UniversityKey Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education,Anhui University
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Univ Turku, Dept Phys & Astron, Turku Ctr Quantum Phys, FIN-20014 Turku, Finland
St Petersburg State Univ Informat Technol Mech &, St Petersburg 197101, RussiaUniv Turku, Dept Phys & Astron, Turku Ctr Quantum Phys, FIN-20014 Turku, Finland
Ivanov, Vladimir
Rozhdestvensky, Yuri
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St Petersburg State Univ Informat Technol Mech &, St Petersburg 197101, RussiaUniv Turku, Dept Phys & Astron, Turku Ctr Quantum Phys, FIN-20014 Turku, Finland