Quantum Darwinism and non-Markovianity in a model of quantum harmonic oscillators

To explain aspects of the quantum-to-classical transition, quantum Darwinism explores the fact that, due to interactions between a quantum open system and its surrounding environment, information about the system can be spread redundantly to the environment. Here we recall that there are in the lite...

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Bibliographic Details
Published in:arXiv.org 2019-11
Main Authors: Oliveira, S M, A L de Paula Jr, Drumond, R C
Format: Article
Language:English
Subjects:
Harmonic oscillators
Open systems
Online Access:Get full text
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Summary:To explain aspects of the quantum-to-classical transition, quantum Darwinism explores the fact that, due to interactions between a quantum open system and its surrounding environment, information about the system can be spread redundantly to the environment. Here we recall that there are in the literature two distinct and non-equivalent ways to make this statement precise and quantitative. We first point out the difference with some simple but illustrative examples. We then consider a model where Darwinism can be seen from both perspectives. Moreover, the non-Markovianity of our model can be varied with a parameter. In a recent work [F. Galve \textit{et al.}, Sci. Reps. 6, 19607 (2016)], the authors concluded that quantum Darwinism can be hindered by non-Markovianity. We depart from their analysis and argue that, from both perspectives to quantum Darwinism, there is no clear relationship between non-Markovianity and quantum Darwinism in our model.
ISSN:2331-8422
DOI:10.48550/arxiv.1911.07958