Affiliation:
1. Department of Computer Science, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
2. Department of Computer Science, University of Oxford, Wolfson Building, Parks Road, Oxford, UK
Abstract
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 quantization where both the information and its propagation in space–time 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.
Funder
National Natural Science Foundation of China
Croucher Foundation, the John Templeton Foundation
Quantum Causal Structures, the Canadian Institute for Advanced Research (CIFAR), the Hong Research Grant Council
Foundational Questions Institute
HKU Seed Funding for Basic Research
UK EPSRC
John Templeton Foundation
Perimeter Institute for Theoretical Physics
Subject
General Physics and Astronomy,General Engineering,General Mathematics
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