QUANTUM INFORMATION PROCESSING METHOD, CLASSICAL COMPUTER, QUANTUM COMPUTER, HYBRID SYSTEM, QUANTUM INFORMATION PROCESSING PROGRAM, AND DATA STRUCTURE FOR CALCULATION OF ENERGY DIFFERENTIAL

摘要

Based on a Hamiltonian and initial information output from a classical computer, a quantum computer executes quantum computation employing a VQE to generate a parameter expressing a first quantum circuit. Based on the parameter expressing the first quantum circuit, the classical computer generates a parameter expressing a second quantum circuit including a rotation gate. The quantum computer executes quantum computation based on the parameter expressing the second quantum circuit and outputs measurement results of this quantum computation. Based on the measurement results output, the Hamiltonian, and a derivative function of the Hamiltonian, the classical computer then computes a derivative function of energy corresponding to the Hamiltonian and outputs the derivative function of energy.