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arXiv · 1311.0250

Design of a millimetre-scale magnetic surface trap for cold atoms

Dimitris Trypogeorgos·Stephen D. Albright·Daniel Beesley·Christopher J. Foot
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Abstract

We study a novel millimetre-scale magnetic trap for ultracold atoms, in which the current carrying conductors can be situated outside the vacuum region, a few mm away from the atoms. This design generates a magnetic field gradient in excess of \SI{1000}{G/cm} at a distance of \SI{2}{mm} from the conductors. We perform electromagnetic and thermo-mechanical characterisation using Finite Element Methods (FEM). The predicted behaviour has been verified by electrical and thermal measurements on a prototype, but has not been implemented on an apparatus with cold atoms. Operating this trap at the highest gradient allows for rapid evaporative cooling comparable to that achieved by atom chips.

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Dimitris Trypogeorgos, Stephen D. Albright, Daniel Beesley, Christopher J. Foot. 2013-11-04. Design of a millimetre-scale magnetic surface trap for cold atoms. https://doi.org/10.1088/0953-4075%2F47%2F7%2F075302

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