Abstract:
Diamond is a leading platform for room-temperature quantum technologies based on nitrogen-vacancy (NV) centers, but scalable quantum computing requires deterministic placement and coupling of NVs with atomic-scale precision. Achieving such control remains a central fabrication challenge.
In this seminar, I will introduce recent advances in atomic fabrication for diamond quantum computing, with an emphasis on scanning tunnelling microscope (STM)–based surface engineering. While STM lithography is well established on materials such as silicon and metals, its application to diamond has remained largely unexplored.
I will present our progress in STM studies of hydrogen-passivated diamond C(100) and C(111) surfaces, including controllable nanometer-scale surface modifications and atomically resolved imaging on both surface orientations. These results establish the essential capability to visualize and manipulate diamond surfaces at the atomic scale, providing a critical step toward deterministic NV engineering.
Our work highlights the potential of STM-enabled atomic fabrication as a pathway toward scalable, room-temperature diamond quantum computing and related quantum technologies.