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arXiv · 1901.05826

The role of information back-flow in the emergence of quantum Darwinism

Nadia Milazzo·Salvatore Lorenzo·Mauro Paternostro·G. Massimo Palma
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Abstract

Quantum Darwinism attempts to explain the emergence of objective reality of the state of a quantum system in terms of redundant information about the system acquired by independent non interacting fragments of the environment. The consideration of interacting environmental elements gives rise to a rich phenomenology, including the occurrence of non-Markovian features, whose effects on objectification {\it a' la} quantum Darwinism needs to be fully understood. We study a model of local interaction between a simple quantum system and a multi-mode environment that allows for a clear investigation of the interplay between information trapping and propagation in the environment and the emergence of quantum Darwinism. We provide strong evidence of the correlation between non-Markovianity and quantum Darwinism in such a model, thus providing strong evidence of a potential link between such fundamental phenomena.

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Nadia Milazzo, Salvatore Lorenzo, Mauro Paternostro, G. Massimo Palma. 2019-01-17. The role of information back-flow in the emergence of quantum Darwinism. https://doi.org/10.1103/physreva.100.012101

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