Localization of a spin-orbit coupled Bose-Einstein condensate in a bichromatic optical lattice

Abstract

We study the localization of a noninteracting and weakly interacting Bose-Einstein condensate with spin-orbit coupling loaded in a quasiperiodic bichromatic optical lattice potential using the numerical solution and variational approximation of a binary mean-field Gross-Pitaevskii equation with two pseudo-spin components. We confirm the existence of the stationary localized states in the presence of the spin-orbit and Rabi couplings for an equal distribution of atoms in the two components. We find that the interaction between the spin-orbit and Rabi couplings favors the localization or delocalization of the BEC depending on the the phase difference between the components. We also studied the oscillation dynamics of the localized states for an initial population imbalance between the two components.

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Cited by in corpus (11)

• Localized modes in quasi-2D Bose-Einstein condensates with spin-orbit and Rabi couplings
• Gap Solitons in Spin-Orbit-Coupled Bose-Einstein Condensates in Optical Lattices
• Phase separation in a spin-orbit coupled Bose-Einstein condensate
• Spontaneous symmetry breaking in a spin-orbit coupled $f=2$ spinor condensate
• Bright soliton dynamics in Spin Orbit-Rabi coupled Bose-Einstein condensates
• Quenching dynamics of the bright solitons and other localized states in spin-orbit coupled Bose-Einstein condensates
• Bloch oscillations of spin-orbit-coupled cold atoms in an optical lattice and spin current generation
• Quantum phases and collective excitations of a spin-orbit-coupled Bose-Einstein condensate in a one-dimensional optical lattice
• Harmonically trapped attractive and repulsive spin-orbit and Rabi coupled Bose-Einstein condensates
• Matter-waves in Bose-Einstein condensates with spin-orbit and Rabi couplings
• Formation of nonlinear modes in one-dimensional quasiperiodic lattices with a mobility edge