Ground-state multiquantum vortices in rotating two-species superfluids
Abstract
We show numerically that a rotating, harmonically trapped mixture of two Bose-Einstein-condensed superfluids can—contrary to its single-species counterpart—contain a multiply quantized vortex in the ground state of the system. This giant vortex can occur without any accompanying single-quantum vortices, may either be coreless or have an empty core, and can be realized in a 87Rb-41K Bose-Einstein condensate. Our results not only provide a rare example of a stable, solitary multiquantum vortex but also reveal exotic physics stemming from the coexistence of multiple, compositionally distinct condensates in one system.
- Publication:
-
Physical Review A
- Pub Date:
- April 2015
- DOI:
- 10.1103/PhysRevA.91.043605
- arXiv:
- arXiv:1504.02178
- Bibcode:
- 2015PhRvA..91d3605K
- Keywords:
-
- 67.85.Fg;
- 03.75.Lm;
- 03.75.Mn;
- Multicomponent condensates;
- spinor condensates;
- Tunneling Josephson effect Bose-Einstein condensates in periodic potentials solitons vortices and topological excitations;
- Condensed Matter - Quantum Gases
- E-Print:
- 6 pages, 4 color figures