Entanglement negativity as a universal non-Markovianity witness

  title={Entanglement negativity as a universal non-Markovianity witness},
  author={Jan Kołodyński and Swapan Rana and Alexander Streltsov},
  journal={Physical Review A},
In order to engineer an open quantum system and its evolution, it is essential to identify and control the memory effects. These are formally attributed to the non-Markovianity of dynamics that manifests itself by the evolution being indivisible in time, a property which can be witnessed by a non-monotonic behavior of contractive functions or correlation measures. We show that by monitoring directly the entanglement behavior of a system in a tripartite setting it is possible to witness all… 

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