Spin-orbit-coupled Bose-Einstein condensates held under toroidal trap

Abstract

We study a quasispin-$1/2$ Bose-Einstein condensate with synthetically generated spin-orbit coupling in a toroidal trap, and show that the system has a rich variety of ground and metastable states. As the central hole region increases, i.e., the potential changes from harmonic-like to ring-like, the condensate exhibits a variety of structures, such as triangular stripes, flower-petal patterns, and counter-circling states. We also show that the rotating systems have exotic vortex configurations. In the limit of a quasi-one dimensional ring, the quantum many-body ground state is obtained, which is found to be the fragmented condensate.

7 pages, 4 figures

References in corpus (13)

• Degenerate Quantum Gases with Spin-Orbit Coupling
• Spin-Orbit Coupled Spinor Bose-Einstein Condensates
• Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
• A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential
• Quench-induced supercurrents in an annular Bose gas
• Persistent currents in spinor condensates
• Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
• Spin - orbital-angular-momentum coupling in Bose-Einstein condensates
• Soliton Magnetization Dynamics in Spin-Orbit Coupled Bose-Einstein Condensates
• Angular spin-orbit coupling in cold atoms
• Quantum phases of Bose-Einstein condensates with synthetic spin - orbital-angular-momentum coupling
• Stationary States of Trapped Spin-Orbit-Coupled Bose-Einstein Condensates
• Fragmentation of Spin-orbit Coupled Spinor Bose-Einstein Condensates