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

In this paper we give a self-contained introduction to the conceptional and mathematical
foundations of quantum information theory. In the first part we introduce the basic notions …

Electrically driven semiconductor lasers are used in technologies ranging from
telecommunications and information storage to medical diagnostics and therapeutics. The …

Quantum continuous variables are being explored,,,,,,,,,,,, as an alternative means to
implement quantum key distribution, which is usually based on single photon counting. The …

We discuss quantum key distribution protocols using quantum continuous variables. We
show that such protocols can be made secure against individual gaussian attacks …

We introduce the concept of non-deterministic noiseless linear amplification. We propose a
linear optical realization of this transformation that could be built with current technology. We …

No-cloning theorem is fundamental for quantum mechanics and for quantum information
science that states an unknown quantum state cannot be cloned perfectly. However, we can …

By combining the Minkowski inequality and the quantum Chernoff bound, we derive easy-to-
compute upper bounds for the error probability affecting the optimal discrimination of …

We address the generation of fully inseparable three-mode entangled states of radiation by
interlinked nonlinear interactions in χ^(2) media. We show how three-mode entanglement …

One aspect of the present invention is related to a quantum cryptographic scheme
comprising at least one sending unit including a physical means of encoding and …