Quantum computing promises breakthroughs in physical sciences, life sciences, and healthcare by solving problems beyond classical computers. Solid-state hardware approaches, such as spin and superconducting qubits, require atomic-scale fabrication precision. Yet these devices are still made using semiconductor processes developed for classical electronics, which may limit performance, scalability, and reproducibility. This creates a need for novel fabrication approaches tailored specifically to quantum technologies.  

This project aims to develop a new fabrication paradigm for quantum devices by combining quantum optics, laser technologies, and advanced crystal growth. It explores laser-based methods that use the precision and selectivity of light to control materials at the atomic scale, establishing a new interdisciplinary approach to quantum device fabrication.  

The approach involves designing and implementing optical pumping schemes on atoms such as germanium, relevant for spin qubits, to increase atom availability for atomic-scale deposition. The experimental platform will be integrated with a vacuum chamber for handling atomic species. These protocols aim to enhance flux and purity in atomic deposition, enabling improved fabrication of quantum materials and next-generation solid-state quantum computers.

Alba Molina Sardina  

‍