Information processing method and information processing apparatus

An information processing method comprising:

• instructing, by a processor, a quantum computer to execute a quantum circuit including a first subcircuit, the quantum circuit being such that, among first qubits having a predetermined attribute included in a plurality of qubits on which gate operations are performed, a predetermined number of first qubits are in a state |1 before a gate operation specified by the first subcircuit;
• acquiring, by the processor, from the quantum computer, a measurement result indicating a state of each of the plurality of qubits after the gate operations specified by the quantum circuit;
• calculating, by the processor, based on states of the first qubits indicated by the measurement result, a number of first qubits that are in the state |1 after the gate operation specified by the first subcircuit;
• and
• discarding, by the processor, the measurement result, upon determining that the number of first qubits that are in the state |1 after the gate operation specified by the first subcircuit is different from the predetermined number.

An information processing apparatus comprising:

• a memory;
• and
• a processor coupled to the memory and the processor configured to:
• instruct a quantum computer to execute a quantum circuit including a first subcircuit, the quantum circuit being such that, among first qubits having a predetermined attribute included in a plurality of qubits on which gate operations are performed, a predetermined number of first qubits are in a state |1 before a gate operation specified by the first subcircuit;
• acquire, from the quantum computer, a measurement result indicating a state of each of the plurality of qubits after the gate operations specified by the quantum circuit;
• calculate, based on states of the first qubits indicated by the measurement result, a number of first qubits that are in the state |1 after the gate operation specified by the first subcircuit;
• and
• discard the measurement result, upon determining that the number of first qubits that are in the state |1 after the gate operation specified by the first subcircuit is different from the predetermined number.