Fujitsu Quantum computers
Fujitsu plans to develop a superconducting quantum computer with 10,000 qubits by 2030.
With aspirations to create a superconducting quantum computer with a capacity of more than 10,000 qubits by fiscal 2030, Fujitsu has outlined an ambitious roadmap for quantum computing. This important project has the potential to speed up the real-world implementation of quantum technologies, especially in fields like materials science where intricate simulations are essential to ground-breaking findings.
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The Foundation of Fault-Tolerant Quantum Computing: STAR Architecture
The company’s ground-breaking “STAR architecture,” an early-stage fault-tolerant quantum computing (early-FTQC) design, is at the heart of Fujitsu’s ambition. With a target of under 60,000 qubits, this architecture, which was introduced in August 2024 in partnership with the University of Osaka, is based on phase rotation gates and is intended to open the door for early-FTQC systems that can outperform traditional computers. In order to achieve practical quantum computing, Fujitsu plans for the 2030 machine to have 250 logical qubits and use the STAR architecture.
The company’s established leadership was emphasized by Vivek Mahajan, CTO in charge of System Platform, Corporate Executive Officer, and Corporate Vice President at Fujitsu Limited, who said, “Fujitsu is already recognized as a world leader in quantum computing across a broad spectrum, from software to hardware.” He added that Fujitsu’s objective of creating a fault-tolerant superconducting quantum computer that is Made in Japan will be greatly aided by the NEDO-led effort.
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A Comprehensive Plan for Developing Advanced Quantum Systems
The dedication of Fujitsu goes beyond the 2030 benchmark. The company intends to undertake advanced research programs starting in fiscal 2030, with a focus on the combination of superconducting and diamond spin-based qubits, after the 10,000-qubit machine is constructed. This long-term goal takes into account the potential for numerous interconnected quantum bit-chips and aspires to achieve a 1,000 logical qubit machine by fiscal 2035.
On the hardware front, the company is already making great progress. Established in 2021 with RIKEN, the RIKEN RQC-Fujitsu Collaboration Centre has already created a 64-qubit superconducting quantum computer in October 2023 and a world-class 256-qubit system in April 2025. This partnership enhances Fujitsu’s R&D activities, as does cooperative research with Japan’s National Institute of Advanced Industrial Science and Technology (AIST). In addition to superconducting technology, Fujitsu is working with QuTech, a preeminent quantum technology research organization, and Delft University of Technology to investigate diamond spin-based qubits, which use light for qubit connectivity. Highly accurate and controllable qubits have been successfully created as a result of this research.
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Overcoming Scaling Obstacles With Targeted Technology Development
A number of intricate obstacles must be overcome in order to scale quantum computers to bigger systems. The strategic goal of Fujitsu’s research is to advance important scaling technologies in a variety of technical fields. These crucial areas of attention consist of:
- High-throughput, high-precision qubit manufacturing technology: This aims to reduce frequency fluctuations by increasing the manufacturing precision of Josephson Junctions, which are essential parts of superconducting qubits.
- Chip-to-chip interconnect technology: To create larger quantum processors, it is essential to develop sophisticated wiring and packaging technologies that allow many qubit chips to be connected.
- High-density packaging and low-cost qubit control: This field tackles the difficulties of cryogenic cooling and control systems, such as the creation of methods to lower the number of components and heat dissipation in dilution freezers.
- Decoding technology for quantum error correction: Robust operation depends on the development of algorithms and system architectures for decoding measurement data and fixing faults in quantum computations.
Maintaining high fidelity across numerous interconnected qubit devices and attaining better component and wiring integration within dilution refrigerators remain major challenges in scaling technology.
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Market positioning and strategic investment
Financially speaking, Fujitsu’s dedication to quantum computing is a calculated bet on cutting-edge technology that could pay off handsomely. In addition to offering financial support, NEDO’s assistance and cooperation with other research institutes also serve to reduce some of the risks that come with such important research and development initiatives. Analysts point out that investors should understand the long-term nature of this investment, though, because the financial rewards might not be fully realised until the technology is fully developed and brought to market.
In the context of the larger market, Fujitsu’s emphasis on quantum computing is in line with the growing need for sophisticated computational solutions in a variety of industries. Potential uses in materials science and other domains might establish Fujitsu as a market leader in the emerging field of quantum computing. However, the business will have to contend with fierce competition from other tech behemoths that are making significant investments in quantum technologies. The capacity of Fujitsu to provide workable, scalable solutions that successfully satisfy industry demands will ultimately determine its level of success.
With its FUJITSU-MONAKA processor family, which will power FugakuNEXT, Fujitsu is also creating the next generation of its High-Performance Computing (HPC) platform. In order to provide its clients with a complete computing platform, the company plans to further combine its high-performance and quantum computing platforms. Although the ultimate aim is thought to be a fully fault-tolerant quantum computer with one million qubits, Fujitsu is still committed to providing workable solutions in the near future.
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