  Though not so widely appreciated in the literature, supersymmetric quantum
mechanics provides an ideal playground for studying non-Abelian geometric
phase, because supersymmetry always guarantees degeneracies in energy levels.
In this paper we first present a simple supersymmetric model for a free
particle on a circle with point-like interactions that exhibits $\mathscr{N} =
2$ supersymmetry and doubly degenerate energy levels. We then show that Berry's
connection in this model is given by the Wu-Yang-like magnetic monopole in
SU(2) Yang-Mills gauge theory. This article is largely based on our recent work
[arXiv:1406.4857].
