Title: Entanglement-assisted quantum communication
Abstract: The process of communicating information between two devices, a sender and a receiver, is modeled by a noisy channel which maps an encoded message to a potentially corrupted output signal. Then, the capacity of a given channel quantifies the optimal asymptotic rate of sending information over the channel such that the original message can always be recovered. In 1948, Shannon derived a formula for the classical capacity of a classical channel which links this rate to the mutual information between the input and output probability distributions. Here, I will introduce these concepts from classical information theory and discuss their extensions to the formalism of quantum theory. A particular focus will be placed on communication in the presence of quantum entanglement between the sender and the receiver, and on communication under the additional assumption of faulty quantum devices.