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Imprinting Multiple Spin Textures Simultaneously onto a Spinor BEC

Joseph D. Murphree, Justin T. Schultz, Azure Hansen +1 more

Bulletin of the American Physical SocietyJun 11, 20150 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

Raman fingerprints on the Bloch sphere of a spinor Bose–Einstein condensate

Justin T. Schultz, Azure Hansen, Joseph D. Murphree +2 more

We explore the geometric interpretation of a diabatic, two-photon Raman process as a rotation on the Bloch sphere for a pseudo-spin-1/2 system. The spin state of a spin-1/2 quantum system can be described by a point on the surface of the Bloch sphere, and its evolution during a Raman pulse is a trajectory on the sphere determined by properties of the optical beams: the pulse area, the relative intensities and phases and the relative frequencies. We experimentally demonstrate key features of this model with a 87Rb spinor Bose–Einstein condensate, which allows us to examine spatially dependent signatures of the Raman beams. The two-photon detuning allows us to precisely control the spin density and imprinted relative phase profiles, as we show with a coreless vortex. With this comprehensive understanding and intuitive geometric interpretation, we use the Raman process to create and tailor as well as study and characterize exotic topological spin textures in spinor BECs.We explore the geometric interpretation of a diabatic, two-photon Raman process as a rotation on the Bloch sphere for a pseudo-spin-1/2 system. The spin state of a spin-1/2 quantum system can be described by a point on the surface of the Bloch sphere, and its evolution during a Raman pulse is a trajectory on the sphere determined by properties of the optical beams: the pulse area, the relative intensities and phases and the relative frequencies. We experimentally demonstrate key features of this model with a 87Rb spinor Bose–Einstein condensate, which allows us to examine spatially dependent signatures of the Raman beams. The two-photon detuning allows us to precisely control the spin density and imprinted relative phase profiles, as we show with a coreless vortex. With this comprehensive understanding and intuitive geometric interpretation, we use the Raman process to create and tailor as well as study and characterize exotic topological spin textures in spinor BECs.

arXiv:1601.00327Journal of Modern OpticsFeb 1, 20169 citations

Controlling the Phase of Imprinted Spin Textures in Spinor BECs

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