Collisional unfolding of quantum Darwinism

Steve Campbell, Barlş Çakmak, Özgür E. Müstecaplloǧlu, Mauro Paternostro, Bassano Vacchini

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We examine the emergence of objectivity via quantum Darwinism through the use of a collision model, i.e., where the dynamics is modeled through sequences of unitary interactions between the system and the individual constituents of the environment, termed "ancillas." By exploiting versatility of this framework, we show that one can transition from a "Darwinistic" to an "encoding" environment by simply tuning their interaction. Furthermore, we establish that in order for a setting to exhibit quantum Darwinism we require a mutual decoherence to occur between the system and environmental ancillas, thus showing that system decoherence alone is not sufficient. Finally, we demonstrate that the observation of quantum Darwinism is sensitive to a nonuniform system-environment interaction.

Original languageEnglish
Article number042103
Number of pages7
JournalPhysical Review A
Issue number4
Publication statusPublished - 03 Apr 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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