Local versus nonlocal information in quantum-information theory: Formalism and phenomena

  title={Local versus nonlocal information in quantum-information theory: Formalism and phenomena},
  author={Michal Horodecki and Paweł Horodecki and Ryszard Horodecki and Jonathan Oppenheim and Aditi Sen De and Ujjwal Sen and Barbara Synak},
  journal={Physical Review A},
In spite of many results in quantum information theory, the complex nature of compound systems is far from clear. In general the information is a mixture of local and nonlocal ('quantum') information. It is important from both pragmatic and theoretical points of view to know the relationships between the two components. To make this point more clear, we develop and investigate the quantum-information processing paradigm in which parties sharing a multipartite state distill local information… 

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