Engineering phase and density of Bose-Einstein condensates in curved waveguides with toroidal topology
arXiv:2306.11873 · doi:10.1088/1367-2630/acf783
Abstract
We investigate the effects of ellipticity-induced curvature on atomic Bose-Einstein condensates confined in quasi-one-dimensional closed-loop waveguides. Our theoretical study reveals intriguing phenomena arising from the interplay between curvature and interactions. Density modulations are observed in regions of high curvature, but these modulations are suppressed by strong repulsive interactions. Additionally, we observe phase accumulation in regions with the lowest curvature when the waveguide with persistent current is squeezed. Furthermore, waveguides hosting persistent currents exhibit dynamic transformations between states with different angular momenta. These findings provide insights into the behavior of atomic condensates in curved waveguides, with implications for fundamental physics and quantum technologies. The interplay between curvature and interactions offers opportunities for exploring novel quantum phenomena and engineering quantum states in confined geometries.
12 pages, 6 figures
References in corpus (29)
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Quench-induced supercurrents in an annular Bose gas
- Persistent currents in spinor condensates
- Roadmap on Atomtronics: State of the art and perspective
- Atomtronic circuits: from many-body physics to quantum technologies
- Atomtronics-enabled Quantum Technologies
- Observation of ultracold atomic bubbles in orbital microgravity
- Imprinting persistent currents in tunable fermionic rings
- Persistent currents in rings of ultracold fermionic atoms
- Quantum Bubbles in Microgravity
- Solitons, solitonic vortices, and vortex rings in a confined Bose-Einstein condensate
- Vortices in a toroidal Bose-Einstein condensate with a rotating weak link
- Low-dimensional quantum gases in curved geometries
- Bose-Einstein Condensation on Curved Manifolds
- One-dimensional description of a Bose-Einstein condensate in a rotating closed-loop waveguide
- Perspective on Quantum Bubbles in Microgravity
- Vortex excitation in a stirred toroidal Bose-Einstein condensate
- Stochastic phase slips in toroidal Bose-Einstein condensates
- Superfluid vortex dynamics on a torus and other toroidal surfaces of revolution
- Persistent current oscillations in a double-ring quantum gas
- Generation of Josephson vortices in stacked toroidal Bose-Einstein condensates
- Symmetry breaking in interacting ring-shaped superflows of Bose-Einstein condensates
- Nonlinear dynamics of Josephson vortices in merging superfluid rings
- Exactly solvable model for a solitonic vortex in a compressible superfluid
- Bose-Einstein condensate in an elliptical waveguide
- Effective quantum dynamics in curved thin-layer system with inhomogeneous confinement
- Producing flow in "racetrack" atom circuits by stirring at zero and non-zero temperature
- Acoustic analogue of Hawking radiation in quantized circular superflows of Bose-Einstein condensates
- Dynamical Instability of 3d Stationary and Traveling Planar Dark Solitons
Cited by in corpus (6)
- Persistent currents in ultracold gases
- Quantum Vortices in Curved Geometries
- Quantum wave representation of dissipative fluids
- Bose-Einstein condensation in exotic lattice geometries
- Dispersion Managed Elliptical Atomtronics for Interferometry
- Geometric potential for a Bose-Einstein condensate on a curved surface