Uploaded March 2026 | Updated September 2026, 3 weeks ago
Our project is developing a quantum computer using silicon electron spin qubits, and in particular, a large-scale silicon quantum computer utilizing silicon semiconductor integrated circuit technology. Currently, the development of quantum computers is dominated by a bottom-up approach that prioritizes “quality” and increases the number of qubits one by one. In contrast, we are taking a top-down approach, taking advantage of the silicon semiconductor technology (which enables the implementation of a large number of qubits with uniform characteristics) to promote a system design that focuses on “quantity” from the beginning. We will also develop various technologies made possible by the silicon semiconductor technology to improve the “quality” of the system as a whole and achieve a fault-tolerant universal quantum computer.
hitachi.co.jp/rd
rd.hitachi.co.jp/backcasting_silicon_quantum_computer
Our project is developing a quantum computer using silicon electron spin qubits, and in particular, a large-scale silicon quantum computer utilizing silicon semiconductor integrated circuit technology. Currently, the development of quantum computers is dominated by a bottom-up approach that prioritizes “quality” and increases the number of qubits one by one. In contrast, we are taking a top-down approach, taking advantage of the silicon semiconductor technology (which enables the implementation of a large number of qubits with uniform characteristics) to promote a system design that focuses on “quantity” from the beginning. We will also develop various technologies made possible by the silicon semiconductor technology to improve the “quality” of the system as a whole and achieve a fault-tolerant universal quantum computer.
hitachi.co.jp/rd
rd.hitachi.co.jp/backcasting_silicon_quantum_computer
