1. A computational system comprising: at least one quantum processor comprising: a plurality of qubits including a first set of qubits and a second set of qubits; a plurality of coupling devices, wherein each coupling device provides controllable communicative coupling between two of the plurality of qubits; a first readout subsystem responsive to a state of each of the qubits in the first set of qubits to generate a first set of detected samples, each detected sample in the first set of detected samples represents a respective one of the qubits in the first set of qubits; at least one post-processing processor-based device communicatively coupled to the at least one quantum processor; and at least one non-transitory computer-readable storage medium communicatively coupled to the at least one post-processing processor-based device and that stores at least one of processor-executable instructions or data, where in use the at least one post-processing processor-based device: receives the first set of detected samples that represents the qubits in the first set of qubits; and post-processes the first set of detected samples to generate a first set of derived samples, wherein each sample in the first set of derived samples represents a respective one of the qubits in the second set of qubits.