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arXiv · 1504.02178

Ground-state multiquantum vortices in rotating two-species superfluids

Pekko Kuopanportti·Natalia V. Orlova·Milorad V. Milošević
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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 $^{87}$Rb-$^{41}$K 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.

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Pekko Kuopanportti, Natalia V. Orlova, Milorad V. Milošević. 2015-04-09. Ground-state multiquantum vortices in rotating two-species superfluids. https://doi.org/10.1103/physreva.91.043605

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