The Markov approximation for the atomic output coupler

Details The Markov approximation for the atomic output coupler The Markov approximation for the atomic output coupler

1998-10-30

arxiv.org/abs/cond-mat/9810413v1

Physics

Condensed Matter

Statistical Mechanics

16 pages, 3 figures

Scientific paper

10.1103/PhysRevA.59.2962

The regions of validity of the Markov approximation for the coupling of atoms out of an atomic trap are determined. We consider radio-frequency output coupling in the presence of gravity and collisional repulsion, and Raman output coupling. The Markov approximation is crucial in most theoretical descriptions of an atom laser that assume a continuous process of output coupling from a trapped Bose-Einstein condensate. In this regime many techniques proved to be useful for modeling the optical laser, such as master equations, can be used to describe the dynamics of the damping of the condensate mode undergoing output coupling.

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