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Principle of Information Causality Rationalizes Quantum Composition.

Authors :
Patra RK
Naik SG
Lobo EP
Sen S
Sidhardh GL
Alimuddin M
Banik M
Source :
Physical review letters [Phys Rev Lett] 2023 Mar 17; Vol. 130 (11), pp. 110202.
Publication Year :
2023

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 Letter, 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.

Details

Language :
English
ISSN :
1079-7114
Volume :
130
Issue :
11
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
37001103
Full Text :
https://doi.org/10.1103/PhysRevLett.130.110202