  Entanglement is an important evidence that a quantum device can potentially
solve problems intractable for classical computers. In this paper, we prepare
connected graph states involving 8 to 16 qubits on ibmqx5, a 16-qubit
superconducting quantum processor accessible via IBM cloud,using low-depth
circuits. We demonstrate that the prepared state is fully entangled, i.e. the
state is inseparable with respect to any fixed partition.
