Complete set of operational measures for the characterization of three-qubit entanglement

J. I. De Vicente, T. Carle, C. Streitberger, B. Kraus

Research output: Contribution to journalArticlepeer-review

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Abstract

We characterize the entanglement contained in a pure three-qubit state via operational entanglement measures. To this end, we derive a new decomposition for arbitrary three-qubit states which is characterized by five parameters (up to local unitary operations). We show that these parameters are uniquely determined by bipartite entanglement measures. These quantities measure the entanglement required to generate the state following a particular preparation procedure and have a clear physical meaning. Moreover, we show that the classification of states obtained in this way is strongly related to the one obtained when considering general local operations and classical communication.

Original languageEnglish
Article number060501
JournalPhysical Review Letters
Volume108
Issue number6
DOIs
StatePublished - 8 Feb 2012
Externally publishedYes

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