| Issue |
EPL
Volume 87, Number 1, July 2009
|
|
|---|---|---|
| Article Number | 13002 | |
| Number of page(s) | 6 | |
| Section | Atomic, Molecular and Optical Physics | |
| DOI | https://doi.org/10.1209/0295-5075/87/13002 | |
| Published online | 24 July 2009 | |
Effect of vortices on the spin-flip lifetime of atoms in superconducting atom-chips
1
Laboratoire Kastler Brossel, ENS, UPMC, CNRS - 24 rue Lhomond, 75005 Paris, France, EU
2
Collège de France - 11 place Marcelin Berthelot, 75005 Paris, France, EU
3
Laboratoire Pierre Aigrain, ENS, UPMC, CNRS - 24 rue Lhomond, F-75231 Paris Cedex 05, France, EU
4
Laboratoire EM2C, Ecole Centrale Paris, CNRS - Grande Voie des Vignes, 92295 Châtenay-Malabry, France, EU
Corresponding author: gilles.nogues@lkb.ens.fr
Received:
7
May
2009
Accepted:
25
June
2009
We study theoretically the lifetime of magnetically trapped atoms in the close vicinity of a type-II superconducting surface, in the context of superconducting atom-chips. We account for the magnetic noise created at the cloud position by the vortices present in the superconductor and give specific results for our experiment which uses a niobium film. Our main result is that atom losses are dominated by the presence of vortices. They remain however dramatically smaller than in equivalent room-temperature atom-chip setups using normal metals.
PACS: 37.10.Gh – Atom traps and guides / 42.50.Ct – Quantum description of interaction of light and matter; related experiments / 47.32.C- – Vortex dynamics
© EPLA, 2009
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