Gaussian quantum information

The science of quantum information has arisen over the last two decades on the manipulation of individual quanta of information, known as bits or qubits. Quantum computers, quantum cryptography and quantum are among the most celebrated ideas that have emerged from this field. It was realized later on that using continuous-variable quantum carriers, instead of qubits, constitutes an extremely powerful approach to quantum information processing. This review focuses on-variable quantum information processes that rely on any combination Gaussian states, Gaussian operations, and Gaussian measurements. , such a restriction to the Gaussian realm comes with various, since on the theoretical side, simple analytical tools are available, on the experimental side, optical components effecting Gaussian processes readily available in the laboratory. Yet, Gaussian quantum information opens the way to a wide variety of tasks and applications, including communication, quantum cryptography, quantum computation, quantum, and quantum state and channel discrimination. This review on the state of the art in this field, ranging from the basic tools and landmark experimental realizations to the most recent developments.