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Controlling the Phase of Imprinted Spin Textures in Spinor BECs

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

Bulletin of the American Physical SocietyJun 3, 20140 citations

Generation of complex spin textures in a Raman-coupled spinor BEC

Kevin Wright, L. Suzanne Leslie, N. P. Bigelow

Bulletin of the American Physical SocietyMay 28, 20080 citations

Evolution of Spin Textures in a Spinor Bose Einstein Condensate

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

Bulletin of the American Physical SocietyJun 9, 20070 citations

Imprinting Skyrmion spin textures in spinor Bose–Einstein condensates

Jae-yoon Choi, Woo Jin Kwon, Moonjoo Lee +3 more

We investigate an experimental method for imprinting Skyrmion spin textures in a spinor Bose–Einstein condensate by rapidly moving the zero-field center of a three-dimensional (3D) quadrupole magnetic field through the condensate. Various excitations such as 2D Skyrmions and coreless vortices were created in spin-1 sodium condensates, initially prepared in a uniform polar or ferromagnetic phase. The spin textures were characterized with the spatial distribution of the spin tilt angle, which is found to be in good quantitative agreement with the local description of single spins under the field rotation. We demonstrate the creation of a highly charged Skyrmion in a trapped condensate by applying the imprinting process multiple times.We investigate an experimental method for imprinting Skyrmion spin textures in a spinor Bose–Einstein condensate by rapidly moving the zero-field center of a three-dimensional (3D) quadrupole magnetic field through the condensate. Various excitations such as 2D Skyrmions and coreless vortices were created in spin-1 sodium condensates, initially prepared in a uniform polar or ferromagnetic phase. The spin textures were characterized with the spatial distribution of the spin tilt angle, which is found to be in good quantitative agreement with the local description of single spins under the field rotation. We demonstrate the creation of a highly charged Skyrmion in a trapped condensate by applying the imprinting process multiple times.

New Journal of PhysicsMay 9, 201251 citations

Creating, imaging, and analyzing magnetic structures in a spinor BEC

Sean Lourette, G. Edward Marti, Ryan Olf +1 more

Bulletin of the American Physical SocietyJun 4, 20130 citations

Observation of Topologically Stable 2D Skyrmions in an Antiferromagnetic Spinor Bose-Einstein Condensate

Jae-yoon Choi, Woo Jin Kwon, Yong-il Shin

We present the creation and time evolution of two-dimensional Skyrmion excitations in an antiferromagnetic spinor Bose-Einstein condensate. Using a spin rotation method, the Skyrmion spin textures were imprinted on a sodium condensate in a polar phase, where the two-dimensional Skyrmion is topologically protected. The Skyrmion was observed to be stable on a short time scale of a few tens of ms but to dynamically deform its shape and eventually decay to a uniform spin texture. The deformed spin textures reveal that the decay dynamics involves breaking the polar phase inside the condensate without having topological charge density flow through the boundary of the finite-sized sample. We discuss the possible formation of half-quantum vortices in the deformation process.We present the creation and time evolution of two-dimensional Skyrmion excitations in an antiferromagnetic spinor Bose-Einstein condensate. Using a spin rotation method, the Skyrmion spin textures were imprinted on a sodium condensate in a polar phase, where the two-dimensional Skyrmion is topologically protected. The Skyrmion was observed to be stable on a short time scale of a few tens of ms but to dynamically deform its shape and eventually decay to a uniform spin texture. The deformed spin textures reveal that the decay dynamics involves breaking the polar phase inside the condensate without having topological charge density flow through the boundary of the finite-sized sample. We discuss the possible formation of half-quantum vortices in the deformation process.

arXiv:1110.3858Physical Review LettersJan 19, 2012182 citations

Imprinting Multiple Spin Textures Simultaneously onto a Spinor BEC

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