Cold atoms in videotape micro-traps

Details Cold atoms in videotape micro-traps Cold atoms in videotape micro-traps

2005-02-15

arxiv.org/abs/physics/0502073v1

Physics

Atomic Physics

Submitted for EPJD topical issue "Atom chips: manipulating atoms and molecules with microfabricated structures"

Scientific paper

10.1140/epjd/e2005-00088-6

We describe an array of microscopic atom traps formed by a pattern of magnetisation on a piece of videotape. We describe the way in which cold atoms are loaded into one of these micro-traps and how the trapped atom cloud is used to explore the properties of the trap. Evaporative cooling in the micro-trap down to a temperature of 1 microkelvin allows us to probe the smoothness of the trapping potential and reveals some inhomogeneity produced by the magnetic film. We discuss future prospects for atom chips based on microscopic permanent-magnet structures.

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