Collisional-inhomogeneity-induced generation of matter-wave dark solitons
arXiv:1007.2638 · doi:10.1016/j.physleta.2010.07.028
Abstract
We propose an experimentally relevant protocol for the controlled generation of matter-wave dark solitons in atomic Bose-Einstein condensates (BECs). In particular, using direct numerical simulations, we show that by switching-on a spatially inhomogeneous (step-like) change of the s-wave scattering length, it is possible to generate a controllable number of dark solitons in a quasi-one-dimensional BEC. A similar phenomenology is also found in the two-dimensional setting of "disk-shaped" BECs but, as the solitons are subject to the snaking instability, they decay into vortex structures. A detailed investigation of how the parameters involved affect the emergence and evolution of solitons and vortices is provided.
8 pages, 5 Figures, Physics Letters A (in press)
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Cited by in corpus (10)
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- Faraday waves in collisionally inhomogeneous Bose-Einstein condensates
- Nonlinear quantum piston for the controlled generation of vortex rings and soliton trains
- The fate of a gray soliton in a quenched Bose-Einstein condensate
- Gap solitons in elongated geometries: the one-dimensional Gross-Pitaevskii equation and beyond
- Effective equations for matter-wave gap solitons in higher-order transversal states
- Effective equations for repulsive quasi-1D BECs trapped with anharmonic transverse potentials
- Dark solitons near potential and nonlinearity steps
- Scattering of matter-waves in spatially inhomogeneous environments
- Accurate one-dimensional effective description of realistic matter-wave gap solitons