1. A computational system, comprising: a computer; and a quantum processor in communication with the computer, the quantum processor comprising: (i) a plurality of quantum devices, wherein each quantum device in the plurality of quantum devices is a node of a lattice, and wherein a quantum device in the plurality of quantum devices has a first basis state and a second basis state; and (ii) a plurality of coupling devices, wherein a first coupling device in the plurality of coupling devices couples a first quantum device in the plurality of quantum devices to a second quantum device in the plurality of quantum devices, wherein the configuration of the first quantum device and the second quantum device in the lattice is selected from the group consisting of a nearest-neighbor configuration and a next-nearest neighbor configuration.