Stability of vortices in exciton-polariton condensates with spin-orbital-angular-momentum coupling
arXiv:2401.17927 · doi:10.1088/1367-2630/ad4089
Abstract
The existence and dynamics of stable quantized vortices is an important subject of quantum many-body physics. Spin-orbital-angular-momentum coupling (SOAMC), a special type of spin-orbit coupling, has been experimentally achieved to create vortices in atomic Bose-Einstein condensates (BEC). Here, we generalize the concept of SOAMC to a two-component polariton BEC and analyze the emergence and configuration of vortices under a finite-size circular pumping beam. We find that the regular configuration of vortex lattices induced by a finite-size circular pump is significantly distorted by the spatially dependent Raman coupling of SOAMC, even in the presence of a repulsive polariton interaction which can assist the forming of stable vortex configuration. Meanwhile, a pair of vortices induced by SOAMC located at the center of polariton cloud remains stable. When the Raman coupling is sufficiently strong and interaction is weak, the vortices spiraling in from the edge of polariton cloud will disrupt the polariton BEC.
References in corpus (18)
- Quantum fluids of light
- Topological nature of bound states in the radiation continuum
- Quantised Vortices in an Exciton-Polariton Fluid
- Spontaneous rotating vortex lattices in a pumped decaying condensate
- Polariton Bose-Einstein condensate from a Bound State in the Continuum
- Half-solitons in a polariton quantum fluid behave like magnetic monopoles
- An efficient and spectrally accurate numerical method for computing dynamics of rotating Bose-Einstein condensates
- Spontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensate
- Robustness and observability of rotating vortex-lattices in an exciton-polariton condensate
- Direct Generation of Radially Polarized Vector Vortex Beam with an Exciton-Polariton Laser
- Exotic Vortex States with Discrete Rotational Symmetry in Atomic Fermi Gases with Spin-Orbital-Angular-Momentum Coupling
- Generating Giant Vortex in a Fermi Superfluid via Spin-Orbital-Angular-Momentum Coupling
- Electrically controlling vortices in a neutral exciton polariton condensate at room temperature
- Chiral emission induced by optical Zeeman effect in polariton micropillars
- Dynamics of a vortex lattice in an expanding polariton quantum fluid
- Fine structure of the stripe phase in ring-shaped Bose-Einstein condensates with spin-orbital-angular-momentum coupling
- Spiraling vortices in exciton-polariton condensates
- Microcavity exciton-polariton mediated Raman scattering: Experiments and theory