Interference of Bose-Einstein Condensates on an Atom Chip

Details Interference of Bose-Einstein Condensates on an Atom Chip Interference of Bose-Einstein Condensates on an Atom Chip

2005-06-18

arxiv.org/abs/cond-mat/0506464v2

Phys. Rev. A 72, 021604(R) (2005)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures

Scientific paper

10.1103/PhysRevA.72.021604

We have used a microfabricated atom chip to split a single Bose-Einstein condensate of sodium atoms into two spatially separated condensates. Dynamical splitting was achieved by deforming the trap along the tightly confining direction into a purely magnetic double-well potential. We observed the matter wave interference pattern formed upon releasing the condensates from the microtraps. The intrinsic features of the quartic potential at the merge point, such as zero trap frequency and extremely high field-sensitivity, caused random variations of the relative phase between the two split condensates. Moreover, the perturbation from the abrupt change of the trapping potential during the splitting was observed to induce vortices.

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