Space Time relaying versus Information Causality

Philippe Jacquet (1)

1 HIPERCOM - High performance communication

We investigate the connection between causality and Information Theory. We show that a simple reading of Information Theory makes that quantum entanglement allows super-luminal information transfer. We show that introducing the concept of space-time information relaying partially solves the paradox of non causal information transfer. Surprisingly information causality is only dependent on the quantum unitarity which is a weaker principle than physical causality.

Mots clés: Quantum information; causality; super-luminal; retro-information; entanglement

Domaines: Réseaux et télécommunications [cs.NI]

Philippe Jacquet. Space Time relaying versus Information Causality. [Research Report] RR-6428, INRIA. 2008, pp.15. ⟨inria-00216180v2⟩