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Non-Markovianity hinders Quantum Darwinism

Galve,Fernando;Zambrini,Roberta;Maniscalco,Sabrina
Scientific Reports 6, 19607 (1-7) (2016)

We investigate Quantum Darwinism and the emergence of a classical world from the quantum one in connection with the spectral properties of the environment. We use a microscopic model of quantum environment in which, by changing a simple system parameter, we can modify the information back flow from environment into the system, and therefore its non-Markovian character. We show that the presence of memory effects hinders the emergence of classical objective reality, linking these two apparently unrelated concepts via a unique dynamical feature related to decoherence factors.