Inductive dressed ring traps for ultracold atoms

Vangeleyn, Matthieu and Garraway, Barry M. and Perrin, Hélène and Arnold, Aidan S. (2014) Inductive dressed ring traps for ultracold atoms. Journal of Physics B: Atomic, Molecular and Optical Physics, 47 (7). 071001. ISSN 1361-6455

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      We present two novel dressed inductive ring trap geometries, ideal for atom interferometry or studies of superfluidity and well-suited to utilization in atom chip architectures. The design permits ring radii currently only accessible via near-diffraction-limited optical traps, whilst retaining the ultra-smooth magnetic potential afforded by inductive traps. One geometry offers simple parallel implementation of multiple rings, whereas the other geometry permits axial beam-splitting of the torus suitable for whole-ring atom interferometry.