  Anyons are exotic quasiparticles obeying fractional statistics,whose behavior
can be emulated in artificially designed spin systems.Here we present an
experimental emulation of creating anyonic excitations in a superconducting
circuit that consists of four qubits, achieved by dynamically generating the
ground and excited states of the toric code model, i.e., four-qubit
Greenberger-Horne-Zeilinger states. The anyonic braiding is implemented via
single-qubit rotations: a phase shift of \pi related to braiding, the hallmark
of Abelian 1/2 anyons, has been observed through a Ramsey-type interference
measurement.
