Assessing non-Gaussian quantum state conversion with the stellar rank
Oliver Hahn, Maxime Garnier, Giulia Ferrini, Alessandro Ferraro, and Ulysse Chabaud
Quantum 10, 2095 (2026). https://doi.org/10.22331/q-2026-05-05-2095 State conversion is a fundamental task in quantum information processing. Quantum resource theories allow for analyzing and bounding conversions that use restricted sets of operations. In the context of continuous-variable systems, state conversions restricted to Gaussian operations are crucial for both fundamental and practical reasons, particularly in state preparation and quantum computing with bosonic codes. However, previou