Ulysse Chabaud

Ulysse Chabaud is a permanent researcher at École Normale Supérieure de Paris, affiliated with the QAT team at INRIA. He coordinates the EIC Pathfinder Challenge project Veriqub and serves as an editor for the open journal Quantum. Previously, he held postdoctoral positions at Caltech’s Institute for Quantum Information and Matter (IQIM) and the Institut de Recherche en Informatique Fondamentale (IRIF) in Paris.

Education:

• PhD in Computer Science (2020), Sorbonne Université

His research focuses on quantum information theory, particularly quantum computing, cryptography, and communication within continuous-variable systems. He investigates the interplay between non-Gaussian states and quantum advantages, aiming to establish foundational insights into quantum resources and their verification.

The 15 most recent publications highlight advancements in bosonic quantum computing, Wigner negativity, quantum verification protocols, and applications in cryptography. These works span theoretical frameworks (e.g., holomorphic representations, non-Gaussian hierarchies) and experimental implementations (e.g., photonic states, linear optics).

Chabaud’s contributions also extend to quantum certification and benchmarking, addressing challenges in validating quantum devices without fault-tolerant mechanisms. He employs tools from quantum optics and mathematical physics, such as stellar formalism and phase-space methods, to delineate boundaries between classical and quantum computation.