Quantum Shannon theory with superpositions of trajectories

Time: 02:00pm 

Venue: Room 308, Chow Yei Ching Building, The University of Hong Kong

Speaker: Hlér Kristjánsson


Hlér Kristjánsson
Department of Computer Science
University of Oxford


Date: May 24, 2019 Friday

Time: 2:00 - 3:00pm

Venue: Room 308, Chow Yei Ching Building, The University of Hong Kong



Shannon’s theory of information was built on the assumption that the information carriers were classical systems. Its quantum counterpart, quantum Shannon theory, explores the new possibilities arising when the information carriers are quantum systems. Traditionally, quantum Shannon theory has focused on scenarios where the internal state of the information carriers is quantum, while their trajectory is classical. Here we propose a second level of quantisation where both the information and its propagation in spacetime is treated quantum mechanically. The framework is illustrated with a number of examples, showcasing some of the counterintuitive phenomena taking place when information travels simultaneously through multiple transmission lines.

About the speaker:

Hlér Kristjánsson is a PhD student at Department of Computer Science, University of Oxford.