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Methods to estimate entanglement in teleportation experiments

Research output: Contribution to journalArticle

Original languageEnglish
Article number032334
Number of pages13
JournalPhysical Review A
Volume99
Issue number3
Early online date22 Mar 2019
DOIs
DateAccepted/In press - 20 Feb 2019
DateE-pub ahead of print - 22 Mar 2019
DatePublished (current) - Apr 2019

Abstract

Quantum state teleportation is a protocol where a shared entangled state is used as a quantum channel to transmit quantum information between distinct locations. Here we consider the task of estimating entanglement in teleportation experiments. We show that the data accessible in a teleportation experiment allows to put a lower bound on some entanglement measures, such as entanglement negativity and robustness. Furthermore, we show cases in which the lower bounds are tight. The introduced lower bounds can also be interpreted as quantifiers of the nonclassicality of a teleportation experiment. Thus, our findings provide a quantitative relation between teleportation and entanglement

    Structured keywords

  • Bristol Quantum Information Institute
  • QITG

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via APS at https://doi.org/10.1103/PhysRevA.99.032334 . Please refer to any applicable terms of use of the publisher.

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