Quandela builds thousands of spin-photon interfaces for hybrid quantum computing

Moving beyond the limitations of individual devices, Quandela has collaborated with C2N and other institutions to fabricate thousands of spin-photon interfaces, a critical step toward scalable photonic quantum computing. These semiconductor structures, built on a foundry-compatible III-V platform, connect stationary matter qubits with photons, enabling hybrid architectures where spin preserves quantum information and photons carry it across networks. Researchers evaluated optical performance, spin properties and inter-device compatibility within the same study, reporting industry-ready devices. This advance addresses a key challenge: producing reproducible, high-quality qubit devices essential for building larger quantum systems. The fabrication of over a thousand spin-photon interfaces marks a step beyond the limited number traditionally used in early quantum hardware development, demonstrating a move towards scalable production techniques. Researchers from Quandela, the Center for Nanosciences and Nanotechnologies (C2N), and collaborating institutions achieved this milestone using a semiconductor pilot production line, a process designed for large-scale deployment and reproducible device characteristics, the company says. This pilot line is compatible with existing III-V semiconductor manufacturing,…