QUROPE Quantum Information Processing and Communication in Europe

We consider the non-equilibrium dynamics of a driven dissipative spin chain with chiral coupling to a 1D bosonic bath, and its atomic implementation with a two-species mixture of cold quantum gases. The reservoir is represented by a spin-orbit coupled 1D quasi-condensate of atoms in a magnetized phase, while the spins are identified with motional states of a separate species of atoms in an optical lattice.

Absolutely maximally entangled (AME) states are those multipartite quantum states that carry absolute maximum entanglement in all possible bipartitions. AME states are known to play a relevant role in multipartite teleportation, in quantum secret sharing, and they provide the basis novel tensor networks related to holography.

We introduce and study the task of assisted coherence distillation. This task arises naturally in bipartite systems where both parties work together to generate the maximal possible coherence on one of the subsystems.

We show that trace distance measure of coherence is a strong monotone for all qubit and, so called, X states.

We study families of positive and completely positive maps acting on a bipartite system C^M \otimes C^N (with M<=N). The maps have a property that, when applied to any state (of a given entanglement class), result in

We study families of positive and completely positive maps acting on a bipartite system C^M \otimes C^N (with M<=N). The maps have a property that, when applied to any state (of a given entanglement class), result in