Generalized ABCD propagation for interacting atomic clouds

Details Generalized ABCD propagation for interacting atomic clouds Generalized ABCD propagation for interacting atomic clouds

2007-09-21

arxiv.org/abs/0709.3381v4

Phys. Rev. A 79, 043613 (2009)

Physics

Condensed Matter

Quantum Gases

15 pages, 4 figures, Final version

Scientific paper

We present a treatment of the nonlinear matter wave propagation inspired from optical methods, which includes interaction effects within the atom optics equivalent of the aberrationless approximation. The atom-optical ABCD matrix formalism, considered so far for non-interacting clouds, is extended perturbatively beyond the linear regime of propagation. This approach, applied to discuss the stability of a matter-wave resonator involving a free-falling sample, agrees very well with the predictions of the full nonlinear paraxial wave equation. An alternative optical treatment of interaction effects, based on the aberrationless approximation and suitable for cylindrical paraxial beams of uniform linear density, is also adapted for matter waves.

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