Stationary States of Trapped Spin-Orbit-Coupled Bose-Einstein Condensates

Abstract

We numerically investigate low-energy stationary states of pseudospin-1 Bose-Einstein condensates in the presence of Rashba-Dresselhaus-type spin-orbit coupling. We show that for experimentally feasible parameters and strong spin-orbit coupling, the ground state is a square vortex lattice irrespective of the nature of the spin-dependent interactions. For weak spin-orbit coupling, the lowest-energy state may host a single vortex. Furthermore, we analytically derive constraints that explain why certain stationary states do not emerge as ground states. Importantly, we show that the distinct stationary states can be observed experimentally by standard time-of-flight spinindependent absorption imaging.

5 pages, 4 figures

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Cited by in corpus (17)

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• Phase separation in a spin-orbit coupled Bose-Einstein condensate
• Spin-orbit-coupled Bose-Einstein condensates held under toroidal trap
• Vortex lattices in binary Bose-Einstein condensates with dipole-dipole interactions
• Spontaneous symmetry breaking in a spin-orbit coupled $f=2$ spinor condensate
• Ring model for trapped condensates with synthetic spin-orbit coupling
• Topological excitations in rotating Bose-Einstein condensates with Rashba-Dresselhaus spin-orbit coupling in a two-dimensional optical lattice
• One- and two-dimensional solitons in spin-orbit-coupled Bose-Einstein condensates with fractional kinetic energy
• Vortices and vortex states in Rashba spin-orbit-coupled condensates
• Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study
• Harmonically trapped attractive and repulsive spin-orbit and Rabi coupled Bose-Einstein condensates
• Quantum phases and spectrum of collective modes in a spin-1 BEC with spin-orbital-angular-momentum coupling
• Matter-waves in Bose-Einstein condensates with spin-orbit and Rabi couplings
• 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
• Effective potentials in a rotating spin-orbit-coupled spin-1 spinor condensate