Trapping and transmission of matter-wave solitons in a collisionally inhomogeneous environment

Physical Review A (Impact Factor: 3.04). 09/2005; DOI: 10.1103/PhysRevA.74.053614
Source: arXiv

ABSTRACT We investigate bright matter-wave solitons in the presence of a spatially varying scattering length. It is demonstrated that, even in the absence of any external trapping potential, a soliton can be confined due to the inhomogeneous collisional interactions. Moreover we observe the enhanced transmission of matter-wave solitons through potential barriers for suitably chosen spatial variations of the scattering length. The results indicate that the manipulation of atomic interactions can become a versatile tool to control the dynamics of matter waves. Comment: 4 pages, 4 figures

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