dorsal/arxiv
View SchemaSpatial diffusion in a periodic optical lattice: revisiting the Sisyphus effect
| Authors | Laurent Sanchez-Palencia, Peter Horak, Gilbert Grynberg |
|---|---|
| Categories | |
| ArXiv ID | physics/0111070 |
| URL | https://arxiv.org/abs/physics/0111070 |
| DOI | 10.1140/epjd/e20020041 |
| Journal | European Physical Journal D 18, 353 (2002) |
Abstract
We numerically study the spatial diffusion of an atomic cloud experiencing Sisyphus cooling in a three-dimensional lin$\bot$lin optical lattice in a broad range of lattice parameters. In particular, we investigate the dependence on the size of the lattice sites which changes with the angle between the laser beams. We show that the steady-state temperature is largely independent of the lattice angle, but that the spatial diffusion changes significantly. It is shown that the numerical results fulfil the Einstein relations of Brownian motion in the jumping regime as well as in the oscillating regime. We finally derive an effective Brownian motion model from first principles which gives good agreement with the simulations.
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"abstract": "We numerically study the spatial diffusion of an atomic cloud experiencing\nSisyphus cooling in a three-dimensional lin$\\bot$lin optical lattice in a broad\nrange of lattice parameters. In particular, we investigate the dependence on\nthe size of the lattice sites which changes with the angle between the laser\nbeams. We show that the steady-state temperature is largely independent of the\nlattice angle, but that the spatial diffusion changes significantly. It is\nshown that the numerical results fulfil the Einstein relations of Brownian\nmotion in the jumping regime as well as in the oscillating regime. We finally\nderive an effective Brownian motion model from first principles which gives\ngood agreement with the simulations.",
"arxiv_id": "physics/0111070",
"authors": [
"Laurent Sanchez-Palencia",
"Peter Horak",
"Gilbert Grynberg"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1140/epjd/e20020041",
"journal_ref": "European Physical Journal D 18, 353 (2002)",
"title": "Spatial diffusion in a periodic optical lattice: revisiting the Sisyphus effect",
"url": "https://arxiv.org/abs/physics/0111070"
},
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