Abstract: A computation device generates a plan that controls an oscillator configured to perform parametric oscillation such that an intensity of a pump signal that is input to the oscillator increases from a first value according to an elapsed time and then decreases to a second value, and a magnitude of a detuning between a resonance frequency of the oscillator and an oscillation frequency of the oscillator increases from a third value according to the elapsed time and then decreases to a fourth value. The computation device generates a quantum state of the oscillator by controlling the oscillator based on the plan. The computation device performs computation using the generated quantum state.

Abstract: When determining, from a plurality of sensors (10), a sensor (10) for observing a plurality of moving objects (20), based on positions of the plurality of moving objects (20), an allocation determination apparatus (2000) executes annealing on an allocation determination model of which value is larger as the number of the moving objects (20) that are not observed by any of the plurality of sensors (10) is larger, and of which value is smaller as the number of the moving objects (20) that are not observed by any of the plurality of sensors (10) is smaller, and thereby determines allocation of the moving object (20) to each of the sensors (10) in a case in which the value of the allocation determination model decreases.

Abstract: A computation apparatus includes a coefficient setting unit configured to set, in a value of an objective function including a performance indicator representing performance of each candidate solution and a constraint indicator representing a degree of each candidate solution satisfying a constraint condition, a value of a coefficient for adjusting a degree of impact between a value of the performance indicator and a value of the constraint indicator according to a value of the performance indicator related to a first candidate solution satisfying the constraint condition, a value of the performance indicator related to a second candidate solution unsatisfying the constraint condition, and a value of the constraint indicator, and a solution acquisition unit configured to search for a solution to a problem to be solved using the objective function which the value of the coefficient is set to.

Abstract: An arithmetic apparatus includes a control unit that changes a first weighting coefficient assigned to a constraint term included in Hamiltonian so that the first weighting coefficient changes differently from a second weighting coefficient assigned to an objective term included in the Hamiltonian in process of reducing quantum fluctuations to obtain a ground state of the Hamiltonian used for solving a combinatorial optimization problem.

Abstract: The efficiency of quantum annealing on an LHZ model is improved. An arithmetic apparatus includes an arithmetic unit configured to adjust an intensity schedule function in quantum annealing of a constraint term expressed by many-body interactions in an LHZ model by a hybrid algorithm that uses a value of the intensity schedule function at one time point or each of a plurality of time points as a variational parameter.