1201.3385 (Aidan S. Arnold)

Extending dark optical trapping geometries    [PDF]

Aidan S. Arnold

New counter-propagating geometries are presented for localising 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.

View original: http://arxiv.org/abs/1201.3385