Structure and dynamics of binary Bose-Einstein condensates with vortex phase imprinting

Abstract

The combination of multi-component Bose-Einstein condensates (BECs) and phase imprinting techniques provides an ideal platform for exploring nonlinear dynamics and investigating the quantum transport properties of superfluids. In this paper, we study abundant density structures and corresponding dynamics of phase-separated binary Bose-Einstein condensates with phase-imprinted single vortex or vortex dipole. By adjusting the ratio between the interspecies and intraspecies interactions, and the locations of the phase singularities, the typical density profiles such as ball-shell structures, crescent-gibbous structures, Matryoshka-like structures, sector-sector structures and sandwich-type structures appear, and the phase diagrams are obtained. The dynamics of these structures exhibit diverse properties, including the penetration of vortex dipoles, emergence of half-vortex dipoles, co-rotation of sectors, and oscillation between sectors. The pinning effects induced by a potential defect are also discussed, which is useful for controlling and manipulating individual quantum states.

References in corpus (11)

• The Vortex Phase Qubit: Generating Arbitrary, Counter-Rotating, Coherent Superpositions in Bose-Einstein Condensates via Optical Angular Momentum Beams
• Binary Quantum Turbulence Arising from Countersuperflow Instability in Two-Component Bose-Einstein Condensates
• Controlling phase separation of a two-component Bose-Einstein condensate by confinement
• Equilibrium solutions of immiscible two-species Bose-Einstein condensates in perturbed harmonic traps
• Parametrically excited star-shaped patterns at the interface of binary Bose-Einstein condensates
• Arbitrary Coherent Superpositions of Quantized Vortices in Bose-Einstein Condensates from Orbital Angular Momentum Beams of Light
• Structure of two-component Bose-Einstein condensates with respective vortex-antivortex superposition states
• Dynamical excitations in the collision of 2D Bose-Einstein condensates
• Phase separation of a Bose-Bose mixture: impact of the trap and particle number imbalance
• Dynamics of vortex quadrupoles in nonrotating trapped Bose-Einstein condensate
• Influence of a dark-soliton on the reflection of a Bose-Einstein condensate by a square barrier