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Extending dark optical trapping geometries

Arnold, Aidan (2012) Extending dark optical trapping geometries. Optics Letters, 37 (13). pp. 2505-2507. ISSN 0146-9592

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Abstract

New counter propagating 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.