CALCULATION CIRCUIT, CALCULATION DEVICE, INFORMATION PROCESSING DEVICE, AND GROUND STATE SEARCH METHOD FOR ISING MODEL

摘要

This calculation circuit is provided with: spin memory for storing a value indicating the state of one spin of an interaction model; interaction coefficient auxiliary memory for storing an interaction coefficient of a subfunction so as to correspond to the spin memory; external magnetic field coefficient auxiliary memory for storing an external magnetic field coefficient of the subfunction so as to correspond to the spin memory; a weight input line for receiving a weight signal of the subfunction; an interaction coefficient calculation unit that calculates a weighted subfunction interaction coefficient using the weight signal of the subfunction and the interaction coefficient of the subfunction; an external magnetic field coefficient calculation unit that calculates a weighted subfunction external magnetic field coefficient using the weight signal of the subfunction and the external magnetic field coefficient of the subfunction; and a next state calculation unit that calculates the next state of spin on the basis of the value indicating the state of spin, the weighted subfunction interaction coefficient, and the weighted subfunction external magnetic field coefficient.