Fujitsu is developing a superconducting quantum computer with a capacity exceeding 10,000 qubits, with construction set to finish in fiscal 2030. The computer will use 250 logical qubits and utilize Fujitsu’s “STAR architecture,” an early-stage fault-tolerant quantum computing (early-FTQC) architecture. The project, backed by the NEDO, aims to make practical quantum computing possible, particularly in materials science. Fujitsu will contribute to the development of quantum computers towards industrialization through joint research with Japan’s National Institute of Advanced Industrial Science and Technology and RIKEN. The company plans to achieve a 1,000 logical qubit machine by fiscal 2035, considering the possibility of multiple interconnected quantum bit-chips. Fujitsu’s research efforts will focus on developing the following scaling technologies: High-throughput, high-precision qubit manufacturing technology: Improvement of the manufacturing precision of Josephson Junctions, critical components of superconducting qubits which minimize frequency variations. Chip-to-chip interconnect technology: Development of wiring and packaging technologies to enable the interconnection of multiple qubit chips, facilitating the creation of larger quantum processors. High-density packaging and low-cost qubit control: Addressing the challenges associated with cryogenic cooling and control systems, including the development of techniques to reduce component count and heat dissipation. Decoding technology for quantum error correction: Development of algorithms and system designs for decoding measurement data and correcting errors in quantum computations.