Two-dimensional anisotropic vortex quantum droplets in dipolar Bose-Einstein condensates
arXiv:2301.04305 · doi:10.1007/s11467-023-1338-7
Abstract
Creation of stable intrinsically anisotropic self-bound states with embedded vorticity is a challenging issue. Previously, no such states in Bose-Einstein condensates (BECs) or other physical settings were known. Dipolar BEC suggests a unique possibility to predict stable anisotropic vortex quantum droplets (AVQDs). We demonstrate that they can be created with the vortex' axis oriented \emph{perpendicular} to the polarization of dipoles. The stability area and characteristics of the AVQDs in the parameter space are revealed by means of analytical and numerical methods. Further, the rotation of the polarizing magnetic field is considered, and the largest angular velocities, up to which spinning AVQDs can follow the rotation in clockwise and anti-clockwise directions, are found. Collisions between moving AVQDs are studied too, demonstrating formation of bound states with a vortex-antivortex-vortex structure. A stability domain for such stationary bound states is identified. Unstable dipolar states, that can be readily implemented by means of phase imprinting, quickly transform into robust AVQDs, which suggests a straightforward possibility for the creation of these states in the experiment.
6 pages, 6 figures, and 48 references
References in corpus (12)
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Self-bound droplets of a dilute magnetic quantum liquid
- Quantum-fluctuation-driven crossover from a dilute Bose-Einstein condensate to a macro-droplet in a dipolar quantum fluid
- Anisotropic solitons in dipolar Bose-Einstein Condensates
- Dipolar gases in quasi one-dimensional geometries
- Rydberg excitation of Bose-Einstein condensates
- Rydberg-induced Solitons: Three-dimensional Self-trapping of Matter Waves
- Vortex solitons in dipolar Bose-Einstein Condensates
- Two-dimensional dipolar gap solitons in free space with spin-orbit coupling
- Stability of dark solitons in three dimensional dipolar Bose-Einstein condensates
- Anisotropic semi-vortices in dipolar spinor condensates controlled by Zeeman splitting
- Axial collective mode of a dipolar quantum droplet
Cited by in corpus (7)
- Strongly anisotropic vortices in dipolar quantum droplets
- Semidiscrete optical vortex droplets in quasi-phase-matched photonic crystals
- Self-bound vortex lattice in a rapidly rotating quantum droplet
- Two-dimensional quantum droplets in binary quadrupolar condensates
- Tightly bound solitons and vortices in three-dimensional bosonic condensates with the electromagnetically-induced gravity
- A Kaleidoscope of Topological Structures in Dipolar Bose-Einstein Condensates with Weyl-Like Spin-Orbit Coupling in Anharmonic Trap
- Static and dynamical properties of quadrupolar quantum droplets in quasi-2D condensates