Fujitsu and the Japanese startup Yaqumo have begun testing the STAR quantum computing architecture on a physical neutral-atom quantum computer. The companies aim to evaluate the compatibility of the architecture with Yaqumo's hardware, which utilizes ytterbium atoms to enable high connectivity between qubits.
The STAR architecture, designed for the Early-FTQC era, focuses on optimizing phase rotations to potentially reduce the number of physical qubits required for calculations. Since April 2026, the partners have theoretically explored applying STAR to neutral-atom systems, moving to physical hardware tests in August.
In addition to the architecture, the companies are adapting the Fujitsu Open Quantum Toolchain to support neutral-atom systems. This software suite manages job scheduling, device monitoring, and command translation, aiming to provide a unified interface for interacting with various quantum platforms.
Yaqumo intends to develop a system featuring over several hundred qubits with error correction capabilities by the 2027 fiscal year. Fujitsu views this collaboration as a step toward building fault-tolerant quantum computers, as it seeks to refine its technology for the transition to large-scale quantum systems.
