The brief

Analyst view

• Fujitsu is a major Japanese IT services and technology company publicly traded on the Tokyo Stock Exchange.
• Its RIKEN collaboration has developed 64-qubit (2023) and 256-qubit (2025) superconducting systems.
• The partnership plans a 1,000-qubit system for 2026 and 10,000+ qubits by 2030.

Technical approach

As reported

3D scalable design

Four-qubit unit cell architecture

Uses repeating 3D unit cells with four qubits each, enabling modular scaling to larger arrays.

Cooling efficiency

Enhanced dilution refrigerators

Improved cooling design increases qubit density within existing dilution refrigerators, reducing cost per qubit.