Group of Dr. René Schwonnek

Our research lies in quantum information theory and mathematical physics, with emphasis on structural and computational aspects of quantum systems. Key themes include generalized phase-space descriptions and uncertainty relations, such as extensions of the Wigner distribution and entropic bounds for mixed states. Another major focus is the algebraic and entanglement structure of quantum models, including work on generalized Schmidt rank frameworks. Contributions also cover quantum cryptography, in particular device-independent scenarios and semidefinite programming methods for secure key rates. Overall, the work connects foundational questions with algorithmic and optimization-oriented perspectives in quantum theory.