Exploring Fujitsu’s Diamond Spin ApproachCould a Diamond Become the Heart of a Quantum Computer?

Hello! I’m Nao from Fujitsu’s Marketing Strategy Division.
When you hear the word “diamond,” do you think of a gemstone? Today, researchers are exploring how diamond could become a technology that supports the future of quantum computing.
Fujitsu has announced research results in diamond-spin-based quantum computing, an approach that uses deliberately created atomic-scale defects in diamond. This marks an important step toward realizing a “sixth approach,” a new option alongside the leading approaches to quantum computing.
Fujitsu is advancing research on diamond-spin-based quantum computing as a promising approach for future large-scale quantum systems. The prototype developed this time is the first module based on the diamond spin approach and represents an important milestone toward scalable quantum computing.
The newly developed system is the first prototype module based on the diamond spin approach. It is designed from the outset to connect qubits optically and scale by linking multiple modules, making it an important first step toward large-scale quantum computing.
In this article, we explain the key features of technology and introduce steps that researchers went through.

【Meet the Researchers】
Kenichi Kawaguchi: Senior Project Director overseeing the development, currently working across two locations in the Netherlands and Japan.
Ryota Kitagawa: Responsible for designing and verifying the operation of the quantum processor chip. Enjoys watching baseball and home gardening.
Itsuki Takagi: Responsible for building the measurement environment, including the optical and high-frequency systems and cryostat. Enjoys photography and reading.
Masayuki Hosoda: Responsible for building the cryostat and measurement equipment, and for structural design inside the cryostat. Enjoys electronics projects and metalworking.