Quantum Optics Seminar: Jan Sperling (Paderborn University)

Quantum correlations and measurements

For harnessing quantum features in next-generation quantum technologies, it is paramount to verify quantum properties in state-of-the-art experiments. In this talk, we discuss recent advances in and applications of theoretical methods for the experimental detection of the quantum nature of states, processes, and measurements. The discussion ranges from traditional quantum-optical techniques with a novel twist to the most recent developments in my group. For example, we show how measurable witnesses and quantum-state tomography can be used to verify sophisticated forms of entanglement and quantum coherence. Other examples pertain to the nonclassical evolution of quantum systems to discriminate classical and genuine quantum processes. Theoretical ideas and experimental implementations are presented.