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| HAL : hal-00647857, version 2 |
| arXiv : 1112.0660 |
| DOI : 10.1103/PhysRevA.85.013643 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review A 85, 1 (2012) 013643 |
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| Versions disponibles : | v1 (03-12-2011) | v2 (11-07-2012) |
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| Rubidium-87 Bose-Einstein condensate in an optically plugged quadrupole trap |
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| Romain Dubessy 1Karina Merloti 1 |
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| (31/01/2012) |
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| We describe an experiment to produce 87Rb Bose-Einstein condensates in an optically plugged magnetic quadrupole trap, using a blue-detuned laser. Due to the large detuning of the plug laser with respect to the atomic transition, the evaporation has to be carefully optimized in order to efficiently overcome the Majorana losses. We provide a complete theoretical and experimental study of the trapping potential at low temperatures and show that this simple model describes well our data. In particular we demonstrate methods to reliably measure the trap oscillation frequencies and the bottom frequency, based on periodic excitation of the trapping potential and on radio-frequency spectroscopy, respectively. We show that this hybrid trap can be operated in a well controlled regime that allows a reliable production of degenerate gases. |
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| 1 : | Laboratoire de physique des lasers (LPL) |
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CNRS : UMR7538 – Université Paris XIII - Paris Nord |
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| BEC |
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| Domaine | : | Physique/Matière Condensée/Gaz Quantiques |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00647857, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00647857 | |
| oai:hal.archives-ouvertes.fr:hal-00647857 | |
| Contributeur : Hélène Perrin | |
| Soumis le : Mercredi 11 Juillet 2012, 14:30:16 | |
| Dernière modification le : Mercredi 11 Juillet 2012, 15:36:00 | |
