Theoretical Quantum Optics

Our research group focuses on foundational questions in quantum information and open quantum systems. A first major topic is the phenomenon of quantum entanglement between two or more particles. Here, we are developing analytical approaches to characterize the different forms of entanglement and their usefulness.

A second major topic is quantum thermodynamics. There, we extend and refine the thermodynamical laws using tools from quantum optics and information theory in order to understand how microscopic quantum systems exchange heat, work, and information with their environment. 

Third, we are developing methods to analyze and improve quantum information processing devices using tools like shadow tomography or error mitigation.

In this research, the group forges a bridge from advanced mathematical methods to collaborations with experimentalists. We work closely with other groups doing quantum science at the University of Siegen. In addition, we collaborate with many partners around the world, e.g., from Austria, Brazil, China, France, Poland, Spain, and Sweden.