Vortices and Spin Textures in a Bose-Einstein Condensate

Azure Hansen, Justin T. Schultz, N. P. Bigelow

Jennie Guzman, Mukund Vengalattore, Sabrina R. Leslie +1 more

Azure Hansen, Justin T. Schultz, N. P. Bigelow

Shu-Wei, Song, Lin - +5 more

Gary Ruben, Michael J. Morgan, David M. Paganin

We describe a wave function engineering approach to the formation of textures in nonrotated multicomponent Bose-Einstein condensates. With numerical simulations of a viable two-component condensate experiment, we demonstrate the formation of a ballistically expanding regular lattice texture, composed of half-quantum vortices and spin-2 textures. The formation is described by a linear interference process in which the geometry and phase of three initially separated wave packets provide deterministic control over the resulting lattice texture.

Yong-Kai Liu, Yun Liu, Shi-Jie Yang

The recent experimental creation of knotted solitons in spin-1 Bose-Einstein condensates opens an interesting avenue for exploring the stability and dynamics of knot solitons. Knotted and helical vortices can be accommodated in spin-orbit-coupled antiferromagnetic spin-1 Bose-Einstein condensates. We demonstrate the stability of these topological structures via numerical simulations of the corresponding Gross-Pitaevskii equation. By changing the strength of the spin-orbit coupling, we find that the ground state undergoes a change from a knotted spin texture to a helical spin texture. Our results reveal that these types of topological object are experimentally realizable in spin-1 Bose-Einstein condensates.