We consider all-optical networks from a quantum perspective. We show that optimal
quantum receivers allow a decrease in energy consumption of all-optical amplifiers …

We consider the tasks of learning quantum states, measurements and channels generated
by continuous-variable (CV) quantum circuits. This family of circuits is suited to describe …

Optical communication technology can be enhanced by using quantum signals to transfer
classical bits. This requires the message-carrying signals to interact coherently at the …

The emerging quantum technologies rely on our ability to establish and control quantum
systems in nonclassical states, exhibiting entanglement and quantum coherence. It is thus …

The non-Markovianity of an arbitrary open quantum system is analyzed in reference to the
multi-time statistics given by its monitoring at discrete times. On the one hand, we exploit the …

The origin of non-classicality in physical systems and its connection to distinctly quantum
features such as entanglement and coherence is a central question in quantum physics …

Optical links can achieve spectral efficiencies beyond the Shannon limit by employing
quantum joint detection receivers that decode messages collectively. We introduce a novel …

The exchange of information between an open quantum system and its environment allows
us to discriminate among different kinds of dynamics, in particular detecting memory effects …

Quantum information theory predicts that communication technology can be enhanced by
using quantum signals to transfer classical bits. In order to fulfill this promise, the message …

We introduce a systematic approximation for an efficient evaluation of Born–Markov master
equations for steady state transport studies in open quantum systems out of equilibrium: the …