PIRSA:24010085

Video URL

https://pirsa.org/24010085

Principle of Information Causality Rationalizes Quantum Composition

Alimuddin, M. (2024). Principle of Information Causality Rationalizes Quantum Composition. Perimeter Institute for Theoretical Physics. https://pirsa.org/24010085

Alimuddin, Mir. Principle of Information Causality Rationalizes Quantum Composition. Perimeter Institute for Theoretical Physics, Jan. 18, 2024, https://pirsa.org/24010085 

          @misc{ scivideos_PIRSA:24010085,
            doi = {10.48660/24010085},
            url = {https://pirsa.org/24010085},
            author = {Alimuddin, Mir},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Principle of Information Causality Rationalizes Quantum Composition},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {jan},
            note = {PIRSA:24010085 see, \url{https://scivideos.org/pirsa/24010085}}
          }

Mir Alimuddin S. N. Bose National Centre For Basic Sciences

Talk numberPIRSA:24010085
DOI10.48660/24010085
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The principle of information causality, proposed as a generalization of no signaling principle, has efficiently been applied to outcast beyond quantum correlations as unphysical. In this talk, we show that this principle, when utilized properly, can provide physical rationale toward structural derivation of multipartite quantum systems. In accordance with the no signaling condition, the state and effect spaces of a composite system can allow different possible mathematical descriptions, even when descriptions for the individual systems are assumed to be quantum. While in one extreme, namely, the maximal tensor product composition, the state space becomes quite exotic and permits composite states that are not allowed in quantum theory, the other extreme - minimal tensor product composition - contains only separable states, and the resulting theory allows only Bell local correlation. As we show, none of these compositions is commensurate with information causality, and hence cannot be the bona-fide description of nature. Information causality therefore promises an information-theoretical derivation of self duality of the state and effect cones for composite quantum systems.

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