About
"Realization of a fault-tolerant universal quantum computer that will revolutionize economy, industry, and security by 2050".
While it is said that the progress of conventional computers is reaching its limits, it is important to be able to respond to the explosion of information processing demands. If we want quantum computing to rapidly solve our numerous and complex social problems, we need a fault-tolerant universal quantum computer that can perform precise computation while correcting quantum errors. In order to realize such a fault-tolerant universal quantum computer we are conducting R&D into the relevant hardware, software, networks, and related quantum technologies.
"Our objectives"
Moonshot Goal 6 aims at "Realization of a fault-tolerant universal quantum computer that will revolutionize economy, industry, and security by 2050".
Within this R&D program plan, our R&D project is responsible for the development of a quantum computer using silicon electron spin qubits, and in particular a large-scale integrated silicon quantum computer utilizing the silicon semiconductor integrated circuit technology. We believe that for quantum computers to have social and industrial value, it is essential to break through the quantum usefulness barrier, where quantum computers achieve superior performance in practical algorithms over classical computers.
The realization of a fault-tolerant universal quantum computer requires improvements in both the "quality" and "quantity" aspects of quantum computers. While the current development of quantum computers is dominated by a bottom-up approach that prioritizes "quality" and increases the number of qubits, we will take the opposite top-down approach. By taking advantage of the excellent integration capability of silicon semiconductor technology (which enables the implementation of a large number of transistors with uniform characteristics), we will promote system design that focuses on "quantity" from the beginning.
We will then develop various technologies (2D qubit arrays, cryogenic CMOS circuits and mounting systems, hot silicon qubits, digital correction, etc.) made possible by this high silicon integration to improve the "quality" of the system as a whole and realize the goal of a fault-tolerant universal quantum computer.
