2009
DOI: 10.1016/j.physd.2008.07.024
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Matter-wave vortices and solitons in anisotropic optical lattices

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Cited by 42 publications
(27 citation statements)
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“…were also investigated [19][20][21][22][23][24]. Vortex dipoles, i.e., composite states with two embedded vortices of opposite topological charges (vortex-antivortex pairs), do exist as stationary soliton solutions to the effectively two-dimensional Gross-Pitaevskii equation for both symmetric and asymmetric traps.…”
Section: Introductionmentioning
confidence: 99%
“…were also investigated [19][20][21][22][23][24]. Vortex dipoles, i.e., composite states with two embedded vortices of opposite topological charges (vortex-antivortex pairs), do exist as stationary soliton solutions to the effectively two-dimensional Gross-Pitaevskii equation for both symmetric and asymmetric traps.…”
Section: Introductionmentioning
confidence: 99%
“…In our experiment with the 1-cm-long crystal, the donut-shaped DMs excited with an optical vortex remain robust during linear propagation. We mention that such linear vortex DMs are quite different from the nonlinear vortex modes found in anisotropic lattices [15][16][17], where the vortex covers four lattice sites and is localized by the nonlinearity-induced defect. Our singlesite vortex tends to break up during nonlinear propagation due to the anisotropic nonlinearity and modulation instability.…”
mentioning
confidence: 62%
“…Adding more beams with phase shifts between them, one can construct composite vortices. For an example, a composite vortex with the total phase circulation of 2π may appear as a four-beam complex with the off-site vortex core in the center and the phase shifts π/2 between adjacent beams [49,50]. We have found that the composite vortices can exist in the system of the uniform setting.…”
Section: (A)mentioning
confidence: 85%