Dark Optical Lattice of Ring Traps for Cold Atoms
نویسندگان
چکیده
We propose a new geometry of optical lattice for cold atoms, namely a lattice made of a 1D stack of dark ring traps. It is obtained through the interference pattern of a standard Gaussian beam with a counter-propagating hollow beam obtained using a setup with two conical lenses. The traps of the resulting lattice are characterized by a high confinement and a filling rate much larger than unity, even if loaded with cold atoms from a MOT. We have implemented this system experimentally, and demonstrated its feasibility. Applications in statistical physics, quantum computing and BoseEinstein condensate dynamics are conceivable PACS numbers: 32.80.Pj, 39.25.+k ∗Electronic address: [email protected]
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