I introduce an algorithm to detect one-way quantum information between two interacting quantum systems, i.e. the direction and orientation of the information transfer in arbitrary quantum dynamics. I then build an information-theoretic quantifier of one-way information which satisfies a set of desirable axioms. In particular, it correctly evaluates whether correlation implies one-way quantum information, and when the latter is transferred between uncorrelated systems. In the classical scenario, the quantity measures information transfer between random variables. I also generalize the method to identify and rank concurrent sources of quantum information flow in many-body dynamics, enabling to reconstruct causal patterns in complex networks.
An axiomatic measure of one-way quantum information / Girolami, D.. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - 384:28(2020), p. 126739.
|Titolo:||An axiomatic measure of one-way quantum information|
|Data di pubblicazione:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.physleta.2020.126739|
|Appare nelle tipologie:||1.1 Articolo in rivista|