Entanglement-assisted quantum communication

Speaker: Paula Belzig, University of Copenhagen

Title: Entanglement-assisted quantum communication

Abstract: The process of communicating information between two devices, a sender and a receiver, is modelled 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.

Location: Niels Henrik Ables hus, room 819

Join Zoom Meeting: https://uio.zoom.us/j/69600702462