Research in quantum information processing has followed two different directions: the use of
discrete variables (qubits) and that of high-dimensional, continuous-variable Gaussian …

Quantum teleportation constitutes a fundamental tool for various applications in quantum
communication and computation. However, state-of-the-art continuous-variable quantum …

We investigate the resources needed for secure teleportation of coherent states. We extend
continuous variable teleportation to include quantum teleamplification protocols that allow …

The ability to manipulate light at the level of single photons, its elementary excitation quanta,
has recently made it possible to produce a rich variety of tailor-made quantum states and …

Noise is the price to pay when trying to clone or amplify arbitrary quantum states. However,
the quantum noise associated with linear phase-insensitive amplifiers can be avoided by …

Recent progress in the development of superconducting circuits has enabled the realization
of interesting sources of nonclassical radiation at microwave frequencies. Here, we discuss …

Quantum-enhanced measurements can provide information about the properties of a
physical system with sensitivities beyond what is fundamentally possible with conventional …

Photons are the best long-range carriers of quantum information, but the unavoidable
absorption and scattering in a transmission channel places a serious limitation on viable …

Entanglement distillation is an indispensable ingredient in extended quantum
communication networks. Distillation protocols are necessarily non-deterministic and require …

We show that the maximum transmission distance of continuous-variable quantum key
distribution in presence of a Gaussian noisy lossy channel can be arbitrarily increased using …