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

Abstract : We have developed a compact partially ferromagnetic electromagnet to produce a Ioffe-Pritchard trap for neutral atoms. Our structure permits strong magnetic confinement with low power consumption. Compared to the previous iron-core electromagnet, 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 Rb 87 atoms to quantum degeneracy. Pure Bose-Einstein condensates containing 10^6 atoms are routinely realized on a half-minute cycle. In addition we test the stability of the magnetic trap by producing atom lasers.
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https://hal.archives-ouvertes.fr/hal-00005837
Contributor : Jean-Félix Riou <>
Submitted on : Sunday, July 10, 2005 - 12:21:47 PM
Last modification on : Wednesday, December 30, 2020 - 1:08:04 PM
Long-term archiving on: : Friday, September 17, 2010 - 6:43:10 PM

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Marie Fauquembergue, Jean-Félix Riou, William Guerin, Sadiq A. Rangwala, Frédéric Moron, et al.. Partially ferromagnetic electromagnet for trapping and cooling neutral atoms to quantum degeneracy. Review of Scientific Instruments, American Institute of Physics, 2005, 76 (10), pp.103104. ⟨10.1063/1.2090407⟩. ⟨hal-00005837v2⟩

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