Bounds on mixed state entanglement

Bruno Leggio, Anna Napoli, Hiromichi Nakazato, Antonino Messina

Research output: Contribution to journalArticle

Abstract

In the general framework of d1 x d2 mixed states, we derive an explicit bound for bipartite negative partial transpose (NPT) entanglement based on the mixedness characterization of the physical system. The derived result is very general, being based only on the assumption of finite dimensionality. In addition, it turns out to be of experimental interest since some purity-measuring protocols are known. Exploiting the bound in the particular case of thermal entanglement, a way to connect thermodynamic features to the monogamy of quantum correlations is suggested, and some recent results on the subject are given a physically clear explanation.

Original languageEnglish
Number of pages1
JournalEntropy
Volume22
Issue number1
DOIs
Publication statusPublished - 2020 Jan 1

Keywords

  • Entanglement
  • Negativity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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