  By utilizing the AdS/CFT correspondence, we explore the dynamics of strongly
coupled superfluid vortices in a disk with constant angular velocity. Each
vortex in the vortex lattice is quantized with vorticity one from the direct
inspection of their phases. As the angular velocity of the disk is greater than
a critical value, the first vortex will be excited as expected from theoretical
predictions. The subsequent two and more vortices are also generated by
increasingly rotating the disk, resulting in the remarkable step transitions
for the angular velocity to excite each individual vortex. When the vortex
number is large enough, the density of vortices is found to be linearly
proportional to the angular velocity, which matches the Feynman relation very
well.
