dorsal/arxiv
View SchemaThermally induced spin flips above an atom chip
| Authors | M. P. A. Jones, C. J. Vale, D. Sahagun, B. V. Hall, E. A. Hinds |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0301018 |
| URL | https://arxiv.org/abs/quant-ph/0301018 |
| DOI | 10.1103/PhysRevLett.91.080401 |
Abstract
We describe an experiment in which Bose-Einstein condensates and cold atom clouds are held by a microscopic magnetic trap near a room temperature metal wire 500 $\mu$m in diameter. The ensemble of atoms breaks into fragments when it is brought close to the ceramic-coated aluminum surface of the wire, showing that fragmentation is not peculiar to copper surfaces. The lifetime for atoms to remain in the microtrap is measured over a range of distances down to $27 \mu$m from the surface of the metal. We observe the loss of atoms from the microtrap due to spin flips. These are induced by radio-frequency thermal fluctuations of the magnetic field near the surface, as predicted but not previously observed.
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"abstract": "We describe an experiment in which Bose-Einstein condensates and cold atom\nclouds are held by a microscopic magnetic trap near a room temperature metal\nwire 500 $\\mu$m in diameter. The ensemble of atoms breaks into fragments when\nit is brought close to the ceramic-coated aluminum surface of the wire, showing\nthat fragmentation is not peculiar to copper surfaces. The lifetime for atoms\nto remain in the microtrap is measured over a range of distances down to $27\n\\mu$m from the surface of the metal. We observe the loss of atoms from the\nmicrotrap due to spin flips. These are induced by radio-frequency thermal\nfluctuations of the magnetic field near the surface, as predicted but not\npreviously observed.",
"arxiv_id": "quant-ph/0301018",
"authors": [
"M. P. A. Jones",
"C. J. Vale",
"D. Sahagun",
"B. V. Hall",
"E. A. Hinds"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.91.080401",
"title": "Thermally induced spin flips above an atom chip",
"url": "https://arxiv.org/abs/quant-ph/0301018"
},
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