  We constructed an electrical circuit to realize a modified Haldane lattice
exhibiting the unusual phenomenon of antichiral edge states. The circuit
consists of a network of inductors and capacitors with interconnections
reproducing the effects of a magnetic vector potential. The next nearest
neighbor hoppings are configured differently from the standard Haldane model,
and as predicted by earlier theoretical studies, this gives rise to antichiral
edge states that propagate in the same direction on opposite edges and co-exist
with bulk states at the same frequency. Using pickup coils to measure the
voltage distributions in the circuit, we experimentally verify the key features
of the modified Haldane lattice, including the group velocities of the
antichiral edge states.
