Full Description
This thesis sheds new light on the fascinating properties of composite quantum systems.
Quantum systems of different sizes, ranging from small bipartite systems to large many-body ensembles, can be studied with the help of modern quantum optical experiments. These experiments make it possible to observe a broad variety of striking features, including nonclassical correlations, complex dynamics and quantum phase transitions. By adopting the complementary perspectives of quantum information theory, quantum chemistry and many-body theory, the thesis develops new methods for the efficient characterization and description of interacting, composite quantum systems.
Contents
Introduction.- Background.- Local Detection of Correlations.- From Local Operations to Collective Dephasing: Behavior of Correlations.- Quantum Phase Transition in a Family of Quantum Magnets.- Multidimensional Nonlinear Spectroscopy of Controllable Quantum Systems.- Open Quantum Systems of Identical Particles.- Summary and Conclusions.
