Candidates for universal measures of multipartite entanglement

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Abstract

We propose and examine several candidates for universal multipartite entanglement measures. The most promising candidate for applications needing entanglement in the full Hilbert space is the ent-concurrence, which detects all entanglement correlations while distinguishing between different types of distinctly multipartite entanglement, and simplifies to the concurrence for two-qubit mixed states. For applications where subsystems need internal entanglement, we develop the absolute ent-concurrence which detects the entanglement in the reduced states as well as the full state.

Original languageEnglish
Pages (from-to)443-471
Number of pages29
JournalQuantum Information and Computation
Volume18
Issue number5-6
DOIs
StatePublished - May 2018

Keywords

  • Absolute ent-concurrence
  • Biseparability
  • Ent
  • Ent-concurrence
  • Entanglement
  • GM concurrence
  • K-separability
  • Multipartite entanglement
  • TGX states

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