Journal
OPTICS LETTERS
Volume 37, Issue 13, Pages 2505-2507Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.002505
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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. (C) 2012 Optical Society of America
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