Physikkolloquium: Uncovering the quantum nature of light

Oct 16
16. October 2019 12:00 - 13:00
Hörsaal H, Staudtstr. 5, 91058 Erlangen

Uncovering the quantum nature of light

We study quantum properties of light, such as nonclassicality, entanglement, and general quantum correlations. We start by introducing the notions of nonclassical and entangled quantum states and identify their origin in the quantum superposition principle. Some examples for experimental reconstructions of quantum states are given. Properties of nonclassical states are discussed with particular emphasis on squeezed states. We introduce a method to visualize the nonclassicality of such quantum states in experiments by direct sampling of the so-called nonclassicality quasi-probability. The verification of quantum entanglement is considered for complex multi-partite scenarios. We also developed a numerical technique to verify non-Gaussian entanglement. Finally we study general, space-time-dependent quantum correlations of light.

Sprecher: Prof. Werner Vogel, Universität Rostock

Kontakt: PD M. Chekhova