Coupled quantum vortex kinematics and Berry curvature in real space
arXiv:2202.13210 · doi:10.1038/s42005-023-01305-x
Abstract
The Berry curvature provides a powerful tool to unify several branches of science through their geometrical aspect: topology, energy bands, spin and vector fields. While quantum defects -- phase vortices and skyrmions -- have been in the spotlight, as rotational entities in condensates, superfluids and optics, their dynamics in multi-component fields remain little explored. Here we use two-component microcavity polaritons to imprint a dynamical pseudospin texture in the form of a double full Bloch beam, a conformal continuous vortex beyond unitary skyrmions. The Berry curvature plays a key role to link various quantum spaces available to describe such textures. It explains for instance the ultrafast spiraling in real space of two singular vortex cores, providing in particular a simple expression -- also involving the complex Rabi frequency -- for their intricate velocity. Such Berry connections open new perspectives for understanding and controlling highly-structured quantum objects, including strongly asymmetric cases or even higher multi-component fields.
17 pages, 4 figures, 3 videos
References in corpus (16)
- Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
- Exciton-polariton condensates
- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Generation of tunable optical skyrmions on Skyrme-Poincaré sphere
- Particle-like topologies in light
- Half-vortices in polariton condensates
- Real-Space Berry Phases - Skyrmion Soccer
- Microcavity-based Generation of Full Poincaré Beams with Arbitrary Skyrmion Numbers
- Topological Transformation and Free-Space Transport of Photonic Hopfions
- Ultrafast control of Rabi oscillations in a polariton condensate
- Twist of generalized skyrmions and spin vortices in a polariton superfluid
- Tuning the Berry curvature in 2D Perovskite
- Optical excitations of Skyrmions, knotted solitons, and defects in atoms
- Shaping the topology of light with a moving Rabi-oscillating vortex
- Thermoelectric effect of skyrmion crystal confined in a magnetic disk
- Temporal shaping and time varying orbital angular momentum of displaced vortices