Rogério de Sousa is a professor of theoretical condensed matter physics at University of Victoria whose work focuses on the properties of materials and their application to quantum computing, sensing, and communication hardware and software. He led a series of works that discovered novel optical resonances and electrooptical control of magnetism in BiFeO3, one of the strongest ferroelectrics in nature. His group contributed to the elucidation of the origin of noise in superconducting-based quantum computers, discovered a new mechanism of photon loss at their interface, and devised a method to benchmark the impact of noise in quantum annealers. They also developed a theory of optimal photon squeezing in group IV semiconductors such as silicon and diamond. With a strong track record in collaborating with experimentalists, de Sousa is the leader of the Consortium on integrated quantum photonics with ferroelectric materials, a CAD$5,000,000 five-year research grant funded in 2024 by the NSERC Quantum Alliance Consortia program.