dorsal/arxiv
View SchemaThermal spin flips in atom chips
| Authors | Per-Kristian Rekdal, Stefan Scheel, Peter L. Knight, E. A. Hinds |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0403166 |
| URL | https://arxiv.org/abs/quant-ph/0403166 |
| DOI | 10.1103/PhysRevA.70.013811 |
Abstract
We derive the spontaneous and thermal spin-flip rates for a neutral two-level ultra-cold atom that is coupled to a magnetic field. We apply this theory to an atom in the vicinity of a 2-layer cylindrical absorbing dielectric body surrounded by an unbounded homogeneous medium. An analytical expression is obtained for the spontaneous and thermal spin-flip rate in this particular geometry. The corresponding lifetime is then computed numerically. We compare these theoretical lifetimes to those measured by Jones et al. [M.P.A. Jones, C.J. Vale, D. Sahagun, B.V. Hall, and E.A. Hinds, Phys. Rev. Lett. {\bf 91}, 080401 (2003)]. We investigate how the lifetime depends on the materials (skin depths) of the cylindrical body. We also show how scaling of the dimensions of the cylindrical body affects the lifetime when (i) the distance from the wire to the atom is fixed and (ii) when the distance from the wire to the atom is scaled.
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"abstract": "We derive the spontaneous and thermal spin-flip rates for a neutral two-level\nultra-cold atom that is coupled to a magnetic field. We apply this theory to an\natom in the vicinity of a 2-layer cylindrical absorbing dielectric body\nsurrounded by an unbounded homogeneous medium. An analytical expression is\nobtained for the spontaneous and thermal spin-flip rate in this particular\ngeometry. The corresponding lifetime is then computed numerically. We compare\nthese theoretical lifetimes to those measured by Jones et al. [M.P.A. Jones,\nC.J. Vale, D. Sahagun, B.V. Hall, and E.A. Hinds, Phys. Rev. Lett. {\\bf 91},\n080401 (2003)]. We investigate how the lifetime depends on the materials (skin\ndepths) of the cylindrical body. We also show how scaling of the dimensions of\nthe cylindrical body affects the lifetime when (i) the distance from the wire\nto the atom is fixed and (ii) when the distance from the wire to the atom is\nscaled.",
"arxiv_id": "quant-ph/0403166",
"authors": [
"Per-Kristian Rekdal",
"Stefan Scheel",
"Peter L. Knight",
"E. A. Hinds"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.70.013811",
"title": "Thermal spin flips in atom chips",
"url": "https://arxiv.org/abs/quant-ph/0403166"
},
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