Error reduction and, or, correction in analog computing including quantum processor-based computing

A method of operation in a computational system that comprises both a quantum processor and at least one processor-based device communicatively coupled to one another, the quantum processor comprising a plurality of qubits and a plurality of coupling devices, wherein each coupling device is operable to provide controllable communicative coupling between two of the plurality of qubits, the method comprising:

• producing a problem graph representation of a first problem;
• identifying each of the qubits that will be operated as a problem qubit, the problem qubit to be used when generating solutions to a first problem;
• for each of at least a number of the qubits that will be operated as problem qubits, identifying a respective ancilla qubit to apply an external flux bias to the respective problem qubits;
• embedding the problem graph representation of the first problem into the problem qubits of the quantum processor;
• applying an external flux bias to each problem qubit to at least partially reduce an h/J ratio misbalance of the respective qubit;
• and
• evolving the quantum processor with the problem graph representation embedded therein to generate solutions to the first problem via the quantum processor.

A computational annealing system, comprising:

• a quantum processor, the quantum processor comprising a plurality of qubits and a plurality of coupling devices, wherein each coupling device is operable to provide controllable communicative coupling between two of the plurality of qubits;
• and
• at least one processor-based device communicatively coupled to the quantum processor;
• at least one non-transitory processor-readable medium that stores at least one of processor-executable instructions or data which, when executed, cause at least one processor to:
• produce a problem graph representation of a first problem;
• identify each of the qubits that will be operated as a problem qubit, the problem qubit to be used when generating solutions to a first problem;
• for each of at least a number of the qubits that will be operated as problem qubits, identify a respective ancilla qubit to apply an external flux bias to the respective problem qubits;
• embed the problem graph representation of the first problem into the problem qubits of the quantum processor;
• and
• evolve the quantum processor with the problem graph representation embedded therein to generate solutions to the first problem via the quantum processor.