Japan unveils first fully domestic quantum computer: A leap in technological sovereignty
- Japan launches its first fully domestic quantum computer.
- The system is powered by the open-source OQTOPUS toolchain.
- All components, including superconducting qubits, are domestically produced.
- The quantum computer has the potential to outpace supercomputers in various applications.
- Research is ongoing to address high error rates and improve Quantum Error Correction (QEC).
Japan has made a significant stride in the realm of quantum computing with the launch of its first fully domestic quantum computer. Activated on July 28, 2025, at the University of Osaka’s Center for Quantum Information and Quantum Biology (QIQB), this groundbreaking system marks a pivotal moment in Japan’s technological journey. The computer, powered by the open-source OQTOPUS toolchain, is entirely built with Japanese components, highlighting the nation’s commitment to technological sovereignty and global collaboration. This development not only underscores Japan’s capabilities in advanced technology but also positions it at the forefront of the quantum revolution.
The technical breakdown: A domestic marvel
The heart of this quantum computer lies in its quantum processing unit (QPU), which uses superconducting qubits. These qubits are derived from metals that exhibit zero electrical resistance when cooled to temperatures close to absolute zero (minus 459.67 degrees Fahrenheit or minus 273.15 degrees Celsius). The QPU was developed at RIKEN, one of Japan’s leading research institutes.
Other key components include:
- Chip Package: Delivered by Seiken
- Magnetic Shield: To protect the system from external magnetic interference
- Infrared Filters: To reduce noise and improve signal quality
- Bandpass Filters: To ensure only the desired signals are processed
- Low-Noise Amplifier: To amplify signals without introducing significant noise
- Specialized Cables: To connect various components
All these elements are housed in a dilution refrigerator, a specialized cryogenic device that maintains the ultra-low temperatures necessary for superconducting quantum computing. The system also includes a pulse tube refrigerator, controllers and a low-noise power source, further enhancing its stability and performance.
Open source OQTOPUS: The software backbone
One of the most significant aspects of this quantum computer is the open-source software toolchain, OQTOPUS (Open Quantum Toolchain for Operators and Users). OQTOPUS is a collection of open-source tools designed to run quantum programs and includes:
- Core Engine: The main processing unit for quantum computations
- Cloud Module: Enables remote access and cloud-based quantum computing
- Graphical User Interface (GUI): Provides an intuitive interface for users to interact with the system
The open-source nature of OQTOPUS ensures that the system is not only technologically advanced but also transparent, collaborative and extensible. This open approach fosters a community-driven development model, which is crucial for the rapid advancement of quantum technologies.
The potential and challenges of quantum computing
Quantum computing has the potential to outpace the world’s fastest supercomputers, making it a game-changer in various fields such as drug discovery, traffic management and logistics optimization. The ability of quantum computers to process calculations in parallel, rather than in sequence, by leveraging the principles of quantum mechanics, is what sets them apart from classical computers.
However, significant challenges remain, particularly in addressing the high error rates that occur during calculations. Current research is heavily focused on Quantum Error Correction (QEC) to mitigate these errors and improve the reliability of quantum systems. The development of QEC is crucial for the practical application of quantum computers and the realization of their full potential.
Global implications and future prospects
Japan’s domestic and open-source quantum initiative not only positions the country at the forefront of the global quantum race but also promotes a model of accessible, transparent and collaborative quantum technologies. This approach is essential for fostering international collaboration and accelerating the development of quantum computing as a whole.
The unveiling of this quantum computer at Expo 2025, held in Osaka from August 14 to August 20, further underscores Japan’s commitment to sharing its technological advancements with the world. Visitors at the exhibition had the opportunity to connect to the system remotely through the cloud and run basic quantum programs, providing a hands-on experience with quantum computing.
A new era for quantum computing
Japan’s launch of its first fully domestic quantum computer, powered by the open-source OQTOPUS toolchain, marks a significant milestone in the nation’s technological journey. This achievement not only secures Japan’s position as a leader in quantum research but also sets a precedent for global collaboration and transparency in the field of quantum computing. As the world continues to explore the vast potential of quantum technologies, Japan’s innovative approach serves as a beacon for the future of computing.
Sources for this article include:
LiveSciecne.com
OpenSourceForU.com
Slashdot.org
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