Abstract: We review the framework of operational probabilistic theories, with particular emphasis on those notions that are related to the structure of composite systems. We then introduce the fermio...
Abstract: The experience in Quantum Information has led the community to look at foundations of Quantum Theory under a completely new angle, regarding the theory as a “theory of information”, and l...
Abstract: A fundamental feature of the quantum world that we live in is that (non-orthogonal) quantum states cannot be cloned. This no cloning theorem lies at the heart of quantum mechanics and is a ...
Abstract: The old question (considered already by Einstein) whether the quantum-mechanical wave function represents "reality" has recently attracted renewed interest. Amazingly, modern approaches ins...
Abstract: In contrast to a single quantum bit, an oscillator can store multiple excitations and coherences provided one has the ability to generate and manipulate complex multi-photon states. We demo...
Abstract: Two central concepts of quantum mechanics are Heisenberg’s uncertainty principle and a subtle form of nonlocality that Einstein famously called “spooky action at a distance.” These two f...