[hal-00466906, v1] An effective scalar magnetic interaction for resonantly trapped atoms
نویسندگان
چکیده
Trapping atoms by dressing them with rf radiation has been realised with a wide range of experimental and theoretical configurations [1–21]. The first experimental trapping with rf dressing [3] resulted in an egg-shell type potential with the atoms confined to the surface of the shell. Gravity caused the atoms to occupy the lower part of the egg-shell. Tubes of dressed atoms have been used to show interference effects [4, 11, 19], and there have been several designs and realisations of dressed atom ring-traps [7, 10, 13, 15]. The wide range of trapping topologies and shapes emerging is due to complex vector relationship between the oscillating and static magnetic fields used. These fields can change both in magnitude and in direction over a region of space. For the case of linearly polarised rf with a field Brf (r) cosωrft, the interaction strength in the rotating wave approximation (RWA) is governed by a Rabi frequency Ω which may be written as
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