Toshiba’s SQBM+™ Now Available on AIST G-QuAT’s ABCI-Q
Quantum-Classical Hybrid Computing Infrastructure

October 7, 2025
Toshiba Digital Solutions Corporation

Toshiba Digital Solutions Corporation today announced that its quantum-inspired optimization solution, SQBM+™, has been adopted for use on ABCI-Q, the quantum-classical hybrid computing infrastructure developed by the Global Research Center for Quantum and AI-Integrated Business Development (G-QuAT) at the National Institute of Advanced Industrial Science and Technology (AIST), one of Japan's largest public research organizations. The ABCI-Q service will be generally available starting October 14.

Quantum computing technologies are drawing increasing attention for their potential to solve complex social and business problems. SQBM+ is a quantum-inspired optimization solution that utilizes the Simulated Bifurcation Algorithm¹, a groundbreaking algorithm developed by Toshiba Corporation. Designed to run on standard (classical) computers, SQBM+ rapidly solves large-scale, complex combinatorial optimization problems with up to 10 million variables, and delivers high-precision approximate solutions (high-quality solutions) in a short time.

Toshiba has demonstrated the effectiveness of SQBM+ in a wide range of fields, including high-speed, high-frequency stock trading using quasi-quantum computing²; computational drug discovery³; warehouse logistics optimization (e.g., picking routes and shelf layouts); energy management; and materials development.

ABCI-Q is a quantum-classical hybrid computing infrastructure designed to support the development of applications and use cases that leverage quantum computing technologies. Centered around “System H,” a GPU-equipped supercomputer, the infrastructure integrates three types of quantum computers. It provides a cutting-edge environment that enables users to combine or selectively use various quantum computing resources—including simulations on System H, on-premises quantum computers, and cloud-based quantum systems—based on specific needs.

Deployed as an Ising machine⁴ on System H, SQBM+ will be accessible to a broader spectrum of users and industries　as part of the ABCI-Q infrastructure. By supporting companies and research institutions to actively leverage SQBM+ around the world, we aim to foster the creation of diverse and impactful quantum use cases.

The SQBM+ adopted for ABCI-Q is designed for deployment on GPU servers owned and operated by the user. Previously available only to select customers and partners, it is now being made generally available to the public, starting today.

Toshiba will continue to collaborate closely with G-QuAT to advance the real-world adoption of quantum technologies and to contribute to solving increasingly complex social challenges.

Dr. Kazuya Masu, Director of the G-QUAT of AIST commented:
“G-QuAT provides ABCI-Q, a quantum-classical hybrid computing infrastructure equipped with SQBM+. Quantum computing technologies are expected to make significant contributions to solving challenges in various industries, including drug discovery, logistics optimization, energy management, and materials development. Technologies such as SQBM+, which offer quantum-inspired computation, are essential for validating use cases and will be made widely available to users through ABCI-Q. We are honored to take this new step forward together with Toshiba Digital Solutions Corporation toward realizing a more prosperous society.”

4:　Ising machine: Hardware and software that solves combinatorial optimization problems that are converted into the form of the Ising model, a model in statistical mechanics that uses a lattice of spinning atoms to explain the behavior of a magnetic material.