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Phys. Rev. A 77, 033409 (2008) [7 pages]

Fully permanent magnet atom chip for Bose-Einstein condensation

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T. Fernholz1,*, R. Gerritsma1,†, S. Whitlock1,2, I. Barb1, and R. J. C. Spreeuw1
1Van der Waals-Zeeman Institute, University of Amsterdam, Valckenierstraat 65, 1018 XE Amsterdam, Netherlands
2ARC Centre of Excellence for Quantum-Atom Optics and Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia

Received 18 May 2007; revised 28 January 2008; published 13 March 2008

We describe a proof-of-principle experiment on a fully permanent magnet atom chip. We study ultracold atoms and produce a Bose-Einstein condensate. The magnetic trap is loaded efficiently by adiabatic transport of a magnetic trap via the application of uniform external fields. Radio frequency spectroscopy is used for in-trap analysis and to determine the temperature of the atomic cloud. The formation of a Bose-Einstein condensate is observed in time-of-flight images and as a narrow peak appearing in the radio frequency spectrum.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.77.033409
DOI:
10.1103/PhysRevA.77.033409
PACS:
37.10.−x, 33.20.Bx, 81.16.Ta

*Present address: QUANTOP, Danish Quantum Optics Center, Niels Bohr Institute, 2100 Copenhagen, Denmark; fernholz@nbi.dk

†Present address: Institut für Quantenoptik und Quanteninformation der Österreichischen Akademie der Wissenschaften, Otto-Hittmair-Platz 1, A-6020 Innsbruck, Austria.

 
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