Ferromagnetic storage ring for atom interferometry
Abstract
Using four concentric stadium shaped coils we have created a toroidal magnetic waveguide, with a minimum radius of curvature of 1 cm. A 1 cm long section of the ring has been loaded directly (in situ [1]) with ultracold 87 Rb atoms. Atoms can be pushed to propagate along the ring with variable speed. The magnetic confinement is strongly enhanced through the use of mu-metal, to enable transport in a single transverse mode. The longitudinal spreading and revival of atom wave packets inside the ring has been studied numerically. This structure may be used as an ultra sensitive rotation sensor through reciprocal atom interferometry: small static perturbations (field inhomogeneties) are tolerable. [1] M. Vengalattore, W. Rooijakkers and M. Prentiss, Phys. Rev. A66, 053403 (2002).
- Publication:
-
APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- May 2003
- Bibcode:
- 2003APS..DMP.L5008R