Self-trapping and splitting of bright vector solitons under inhomogeneous defocusing nonlinearities

Abstract

We show that bimodal systems with a spatially nonuniform defocusing cubic nonlinearity, whose strength grows toward the periphery, can support stable two-component solitons. For a sufficiently strong XPM interaction, vector solitons with overlapping components become unstable, while stable families of solitons with spatially separated components emerge. Stable complexes with separated components may be composed not only of fundamental solitons, but of multipoles too.

3 pages, 4 figures, to appear in Optics Letters

References in corpus (3)

• Bright solitons from defocusing nonlinearities
• Algebraic bright and vortex solitons in defocusing media
• Localized modes of binary mixtures of Bose-Einstein condensates in nonlinear optical lattices

Cited by in corpus (16)

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• Self-trapping under the two-dimensional spin-orbit-coupling and spatially growing repulsive nonlinearity
• Bright solitons from the nonpolynomial Schrödinger equation with inhomogeneous defocusing nonlinearities
• Dynamics of Vector Solitons in Bose-Einstein Condensates
• Solitons supported by spatially inhomogeneous nonlinear losses
• Solitons supported by singular spatial modulation of the Kerr nonlinearity
• Suppression of the quantum collapse in binary bosonic gases
• Solitons and Vortices in Two-dimensional Discrete Nonlinear Schrodinger Systems with Spatially Modulated Nonlinearity
• Self-trapping of Fermi and Bose gases under spatially modulated repulsive nonlinearity and transverse confinement
• Solitary modes in nonlocal media with inhomogeneous self-repulsive nonlinearity
• Systematic vector solitary waves from their linear limits in one-dimensional $n$-component Bose-Einstein condensates
• Spatial solitons under competing linear and nonlinear diffractions
• Bright Discrete Solitons in Spatially Modulated DNLS Systems