Quantum annealing apparatus

A quantum annealing apparatus comprising:

• a quantum calculation unit including a plurality of quantum bits coupled according to initial Hamiltonian;
• an input unit applying data to the plurality of quantum bits;
• an operation unit operating the plurality of quantum bits;
• and
• an output unit acquiring and outputting components in a axis from the plurality of quantum bits, wherein
• the operation unit executes:
• a selecting process of selecting a first quantum bit, a second quantum bit and a third quantum bit among the plurality of quantum bits, the second quantum bit and the third quantum bit being coupled in the quantum calculation unit;
• a first rotating operation of rotating each of the second quantum bit and the third quantum bit by 90° around a first axis perpendicular to the Z axis;
• an interaction operation of causing the first quantum bit and the second quantum bit to interact with each other;
• and
• a second rotating operation of rotating each of the second quantum bit and the third quantum bit by 90° around a second axis perpendicular to the Z axis and the first axis.