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Atom Chip for Transporting and Merging Magnetically Trapped Atom Clouds

W. Hänsel·J. Reichel·P. Hommelhoff·T. W. Hänsch
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Abstract

We demonstrate an integrated magnetic ``atom chip'' which transports cold trapped atoms near a surface with very high positioning accuracy. Time-dependent currents in a lithographic conductor pattern create a moving chain of magnetic potential wells; atoms are transported in these wells while remaining confined in all three dimensions. We achieve fluxes up to 10^6 /s with a negligible heating rate. An extension of this ``atomic conveyor belt'' allows the merging of magnetically trapped atom clouds by unification of two Ioffe-Pritchard potentials. Under suitable conditions, the clouds merge without loss of phase space density. We demonstrate this unification process experimentally.

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W. Hänsel, J. Reichel, P. Hommelhoff, T. W. Hänsch. 2000-08-25. Atom Chip for Transporting and Merging Magnetically Trapped Atom Clouds. https://arxiv.org/abs/quant-ph/0008111

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