Partially ferromagnetic electromagnet for trapping and cooling neutral atoms to quantum degeneracy

Journal Article · Sat Oct 15 04:00:00 EDT 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2090407· OSTI ID:20723173

Fauquembergue, M; Riou, J-F; Guerin, W; Rangwala, S; Moron, F; Villing, A; Le Coq, Y; Bouyer, P; Aspect, A; Lecrivain, M ^[1]

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1. Groupe d'Optique Atomique, Laboratoire Charles Fabry de l'Institut d'Optique, Unite Mixte de Recherche (UMR) 8501 du Centre National de la Recherche Scientifique (CNRS), Batiment 503 Campus Universitaire d'Orsay, 91403 Orsay Cedex (France)

We have developed a compact partially ferromagnetic electromagnet to produce an Ioffe-Pritchard trap for neutral atoms. Our structure permits strong magnetic confinement with low power consumption. Compared to the previous iron-core electromagnet [B. Desruelle, V. Boyer, P. Bouyer, G. Birkl, M. Lecrivain, F. Alves, C. Westbrook, and A. Aspect, Eur. Phys. J. D 1, 255 (1998)], it allows for easy compensation of remnant fields and very high stability, along with cost-effective realization and compactness. We describe and characterize our apparatus and demonstrate trapping and cooling of {sup 87}Rb atoms to quantum degeneracy. Pure Bose-Einstein condensates containing 10{sup 6} atoms are routinely realized on a half-minute cycle. In addition we test the stability of the magnetic trap by producing atom lasers.

• OSTI ID: 20723173
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 76; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
COOLING
ELECTROMAGNETS
FERROMAGNETIC MATERIALS
IRON
MAGNETIC CONFINEMENT
RADIATION PRESSURE
RUBIDIUM
RUBIDIUM 87
STABILITY
TRAPPING
TRAPS