The science of quantum information has arisen over the last two decades centered on the
manipulation of individual quanta of information, known as quantum bits or qubits. Quantum …

Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to
real-world applications for communication and computation unavailable without the …

We develop a resource theory for continuous-variable systems grounded on operations
routinely available within current quantum technologies. In particular, the set of free …

These notes originated out of a set of lectures in Quantum Optics and Quantum Information
given by one of us (MGAP) at the University of Napoli and the University of Milano. A quite …

The impossibility of perfectly copying (or cloning) an unknown quantum state is one of the
basic rules governing the physics of quantum systems. The processes that perform the …

We derive a computable analytical formula for the quantum fidelity between two arbitrary
multimode Gaussian states which is simply expressed in terms of their first-and second …

We prove that it is impossible to distill more entanglement from a single copy of a two-mode
bipartite entangled Gaussian state via local Gaussian operations and classical …

Coherent interactions that generate negligible entanglement can still exhibit unique
quantum behaviour. This observation has motivated a search beyond entanglement for a …

Quantum mechanics imposes that any amplifier that works independently on the phase of
the input signal has to introduce some excess noise. The impossibility of such a noiseless …

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