dorsal/arxiv
View SchemaAnharmonic parametric excitation in optical lattices
| Authors | R. Jáuregui, N. Poli, G. Roati, G. Modugno |
|---|---|
| Categories | |
| ArXiv ID | physics/0103046 |
| URL | https://arxiv.org/abs/physics/0103046 |
| DOI | 10.1103/PhysRevA.64.033403 |
| Journal | Phys. Rev. A 64, 033403 (2001) |
Abstract
We study both experimentally and theoretically the losses induced by parametric excitation in far-off-resonance optical lattices. The atoms confined in a 1D sinusoidal lattice present an excitation spectrum and dynamics substantially different from those expected for a harmonic potential. We develop a model based on the actual atomic Hamiltonian in the lattice and we introduce semiempirically a broadening of the width of lattice energy bands which can physically arise from inhomogeneities and fluctuations of the lattice, and also from atomic collisions. The position and strength of the parametric resonances and the evolution of the number of trapped atoms are satisfactorily described by our model.
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"abstract": "We study both experimentally and theoretically the losses induced by\nparametric excitation in far-off-resonance optical lattices. The atoms confined\nin a 1D sinusoidal lattice present an excitation spectrum and dynamics\nsubstantially different from those expected for a harmonic potential. We\ndevelop a model based on the actual atomic Hamiltonian in the lattice and we\nintroduce semiempirically a broadening of the width of lattice energy bands\nwhich can physically arise from inhomogeneities and fluctuations of the\nlattice, and also from atomic collisions. The position and strength of the\nparametric resonances and the evolution of the number of trapped atoms are\nsatisfactorily described by our model.",
"arxiv_id": "physics/0103046",
"authors": [
"R. J\u00e1uregui",
"N. Poli",
"G. Roati",
"G. Modugno"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.64.033403",
"journal_ref": "Phys. Rev. A 64, 033403 (2001)",
"title": "Anharmonic parametric excitation in optical lattices",
"url": "https://arxiv.org/abs/physics/0103046"
},
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