Quasi-continuous atom laser in the presence of gravity

Details Quasi-continuous atom laser in the presence of gravity Quasi-continuous atom laser in the presence of gravity

2000-07-16

arxiv.org/abs/physics/0007051v3

Phys. Rev. Lett. 86, 4729 (2001)

Physics

Atomic Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.86.4729

We analyse the extraction of a coherent atomic beam from a trapped Bose-Einstein condensate using a rf transition to a non-trapping state at T=0 K. Our quantum treatment fully takes gravity into account but neglects all interactions in the free falling beam. We obtain an analytical expression of the output rate and of the wave function of the extracted beam, i.e. the output mode of the ``atom laser''. Our model reproduces satisfactorily experimental data without any adjustable parameter.

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