We review recent developments in the physics of ultracold atomic and molecular gases in
optical lattices. Such systems are nearly perfect realisations of various kinds of Hubbard …

Graph states are multiparticle entangled states that correspond to mathematical graphs,
where the vertices of the graph take the role of quantum spin systems and edges represent …

Quantum physics has revolutionized our understanding of information processing and
enables computational speed-ups that are unattainable using classical computers. This …

The recognition of the key role entanglement plays in the understanding of the radical
departure of quantum from classical physics came historically remarkably late. In the early …

We investigate how stabilizer theory can be used for constructing sufficient conditions for
entanglement. First, we show how entanglement witnesses can be derived for a given state …

Entanglement witnesses provide tools to detect entanglement in experimental situations
without the need of having full tomographic knowledge about the state. If one estimates in an …

Measurement-based quantum computation has emerged from the physics community as a
new approach to quantum computation where the notion of measurement is the main driving …

Quantum communication between distant parties is based on suitable instances of shared
entanglement. For efficiency reasons, in an anticipated quantum network beyond point-to …

Graph states are versatile resources for various quantum information processing tasks,
including measurement-based quantum computing and quantum repeaters. Although the …

Graph states, and the entanglement they posses, are central to modern quantum computing
and communications architectures. Local complementation–the graph operation that links all …