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

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Cited by in corpus (15)

• Stable multi-ring and rotating solitons in two-dimensional spin-orbit coupled Bose-Einstein condensates with a radially-periodic potential
• Odd-petal states and persistent flows in spin-orbit-coupled Bose-Einstein condensates
• Self-trapping under the two-dimensional spin-orbit-coupling and spatially growing repulsive nonlinearity
• Vortex states and spin textures of rotating spin-orbit-coupled Bose-Einstein condensates in a toroidal trap
• Topological excitations in rotating Bose-Einstein condensates with Rashba-Dresselhaus spin-orbit coupling in a two-dimensional optical lattice
• Gauge-potential-induced rotation of spin-orbit-coupled Bose-Einstein condensates
• Matter-wave Fractional Revivals in a Ring Waveguide
• Spin-orbit-coupled spin-1 Bose-Einstein condensates in a toroidal trap: even-petal-number necklacelike state and persistent flow
• Two-dimensional quantum droplets in binary quadrupolar condensates
• Spatiotemporal Bloch states of a spin-orbit coupled Bose-Einstein condensate in an optical lattice
• Ground states of dipolar spin-orbit-coupled Bose-Einstein condensates in a toroidal trap
• Topological defects in rotating spin-orbit-coupled dipolar spin-1 Bose-Einstein condensates
• Bogoliubov spectrum and the dynamic structure factor in a quasi-two-dimensional spin-orbit coupled BEC
• Nonlinearity mediated miscibility dynamics of mass-imbalanced binary Bose Einstein condensate for circular atomtronics
• Nonlinear modes in spatially confined spin-orbit-coupled Bose-Einstein condensates with repulsive nonlinearity