Analog processors for solving various computational problems are provided.
Such analog processors comprise a plurality of quantum devices, arranged
in a lattice, together with a plurality of coupling devices. The analog
processors further comprise bias control systems each configured to apply
a local effective bias on a corresponding quantum device. A set of
coupling devices in the plurality of coupling devices is configured to
couple nearest-neighbor quantum devices in the lattice. Another set of
coupling devices is configured to couple next-nearest neighbor quantum
devices. The analog processors further comprise a plurality of coupling
control systems each configured to tune the coupling value of a
corresponding coupling device in the plurality of coupling devices to a
coupling. Such quantum processors further comprise a set of readout
devices each configured to measure the information from a corresponding
quantum device in the plurality of quantum devices.