  We show strong positive spatial correlations in the qubits of a D-Wave 2000Q
quantum annealing chip that are connected to qubits outside their own unit
cell. By simulating the dynamics of spin networks, we then show that
correlation between nodes is affected by a number of factors. The different
connectivity of qubits within the network means that information transfer is
not straightforward even when all the qubit-qubit couplings have equal
weighting. The similarity between connected nodes is further changed when the
couplings' strength is scaled according to the physical length of the
connections (here to simulate dipole-dipole interactions). This highlights the
importance of understanding the architectural features and potentially
unprogrammed interactions/connections that can divert the performance of a
quantum system away from the idealised model of identical qubits and couplings
across the chip.
