Effects of dissipation in reservoir computing using spin qubit array

Abstract Reservoir computing (RC) is one of the hottest topics as a promising application for many physical devices because their device characteristics can be directly used in computing sequences. Quantum RC is also a promising candidate for the application of even small-number qubit systems. Here, we propose a quantum RC based on the spin qubit system reflecting the status of the spin qubits in experiments of a one-dimensional qubit array. Spin qubits are coupled via the Heisenberg interaction, and data sequences are inputted to one of the spin qubits by pulsed rotations. By introducing dissipation, we obtain satisfactory performance as a quantum RC.