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In the paper, we investigated the influence of local and global interactionon the efficiency of continuous-time quantum spatial search. To do so, weanalyzed numerically chimera graph, which is defined as 2D grid with each nodereplaced by complete bipartite graph. Our investigation provides a numericalevidence that with a large number of local interactions the quantum spatialsearch is optimal, contrary to the case with limited number of suchinteractions. The result suggests that relatively large number of localinteractions with the marked vertex is necessary for optimal search, which inturn would imply that poorly connected vertices are hard to be found.

Impact of global and local interaction on quantum spatial search on chimera graph