Over the past few decades, significant progress has been made in quantum information
technology, from theoretical studies to experimental demonstrations. Revolutionary quantum …

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 …

Gaussian states have played an important role in the physics of continuous-variable
quantum systems. They are appealing for the experimental ease with which they can be …

Decoherence, often caused by unavoidable coupling with the environment, leads to
degradation of quantum coherence. For a multipartite quantum system, decoherence leads …

Signal amplification is ubiquitous in the control of physical systems, and the ultimate
performance limit of amplifiers is set by quantum physics. Increasing the amplitude of an …

Entanglement distillation is an essential protocol for long-distance quantum
communications, typically for extending the range of quantum key distribution. In the field of …

Revivals of quantum correlations in composite open quantum systems are a useful
dynamical feature against detrimental effects of the environment. Their occurrence is …

Quantum technology relies on the utilization of resources, like quantum coherence and
entanglement, which allow quantum information and computation processing. This …

Tap-proof long-distance quantum communication requires a deep understanding of the
strong losses in transmission channels. Here we provide a rigorous treatment of the effects …

Unique in that it is jointly written by an experimentalist and a theorist, this monograph
presents universal quantum computation based on quantum teleportation as an elementary …