Methods to estimate entanglement in teleportation experiments

Ivan Supic, Paul Skrzypczyk, Daniel Cavalcanti

Research output: Contribution to journalArticle (Academic Journal)

1 Citation (Scopus)
147 Downloads (Pure)

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
Original languageEnglish
Article number032334
Number of pages13
JournalPhysical Review A
Volume99
Issue number3
Early online date22 Mar 2019
DOIs
Publication statusPublished - Apr 2019

Structured keywords

  • Bristol Quantum Information Institute
  • QITG

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