Abstract
New counterpropagating geometries are presented for localizing ultracold atoms in the dark regions created by the interference of Laguerre–Gaussian laser beams. In particular dark helices, an “optical revolver,” axial lattices of rings, and axial lattices of ring lattices of rings are considered and a realistic scheme for achieving phase stability is explored. The dark nature of these traps will enable their use as versatile tools for low-decoherence atom interferometry with zero differential light shifts.
©2012 Optical Society of America
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