Observation of antichiral edge states in a circuit lattice

A modified Haldane lattice exhibits the intriguing phenomenon of antichiral edge states that propagate in the same direction on opposite edges and co-exist with bulk states. Using an electric circuit, researchers have successfully demonstrated antichiral edge states. By measuring voltage distributions in the circuit, the key features of the antichiral edge states have been verified experimentally for the first time, including their group velocities and ability to propagate consistently in a Möbius strip configuration.