The paper by M. R. Matthews et al. describes the creation and imaging of vortices in a two-component Bose-Einstein condensate (BEC). The vortices are generated through a coherent process involving the interconversion between two internal spin states of 87Rb atoms, controlled by a spatially and temporally varying microwave field and an optical laser beam. The authors use an interference technique to map the phase of the vortex state, confirming its 2π phase winding required for quantization. They observe differences in the dynamics and stability of vortices created in either of the two components. The study highlights the potential for creating vortices in different physical limits, such as a large repulsive central potential or a small amount of 2-component fluid, and explores the stability and behavior of these vortices over time.The paper by M. R. Matthews et al. describes the creation and imaging of vortices in a two-component Bose-Einstein condensate (BEC). The vortices are generated through a coherent process involving the interconversion between two internal spin states of 87Rb atoms, controlled by a spatially and temporally varying microwave field and an optical laser beam. The authors use an interference technique to map the phase of the vortex state, confirming its 2π phase winding required for quantization. They observe differences in the dynamics and stability of vortices created in either of the two components. The study highlights the potential for creating vortices in different physical limits, such as a large repulsive central potential or a small amount of 2-component fluid, and explores the stability and behavior of these vortices over time.