Dynamically controlled toroidal and ring-shaped magnetic traps

Details Dynamically controlled toroidal and ring-shaped magnetic traps Dynamically controlled toroidal and ring-shaped magnetic traps

2005-12-05

arxiv.org/abs/physics/0512017v2

Phys. Rev. A 75, 063406 (2007)

Physics

Atomic Physics

6 pages, 4 figures. Paragraphs on gravity compensation and expected trap lifetimes added

Scientific paper

10.1103/PhysRevA.75.063406

We present traps with toroidal $(T^{2})$ and ring-shaped topologies, based on adiabatic potentials for radio-frequency dressed Zeeman states in a ring-shaped magnetic quadrupole field. Simple adjustment of the radio-frequency fields provides versatile possibilities for dynamical parameter tuning, topology change, and controlled potential perturbation. We show how to induce toroidal and poloidal rotations, and demonstrate the feasibility of preparing degenerate quantum gases with reduced dimensionality and periodic boundary conditions. The great level of dynamical and even state dependent control is useful for atom interferometry.

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