Abstract
Based on the dressed-atom approach, we discuss atwo-dimensional (2D) radio-frequency trap for neutral atoms, in whichthe trap potential derives from the magnetic-dipole transitions amongthe hyperfine Zeeman sublevels. By adjusting the detuning of theradiation from resonance, the trapping states will be changedpredominantly from the bare states of mFgF>0 to otherstates of mFgF<0, where mF and gF are thequantum numbers of Zeeman sublevels and the Landé factor, respectively.This character contrasts finely with that of a static magnetic trapthat can only trap or guide the states of mFgF>0. Incomparison to the optical field, the radio-frequency trap eliminatesthe spontaneous emission heating of the atoms. Unlike other oscillatingtraps reported in the literature, the configuration of theradio-frequency trap is suitable for realization of a miniature magneticguide.
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