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Multipartite entanglement in four-qubit graph states

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Abstract

We consider a compendium of the non-trivial four-qubit graphs, derive their corresponding quantum states and classify them into equivalent classes. We use Meyer-Wallach measure and its generalizations to study block-partition and global entanglement in these states. We obtain several entanglement quantities for each graph state, which present a comprehensive characterization of the entanglement properties of the latter. As a result, a number of correlations between the graph structure and multipartite entanglement quantities have also been established.

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Authors and Affiliations

  1. Physics Department, Shahid Chamran University, Ahvaz, Iran

    Mojtaba Jafarpour & Leila Assadi

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  1. Mojtaba Jafarpour
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  2. Leila Assadi
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Correspondence to Mojtaba Jafarpour.

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Jafarpour, M., Assadi, L. Multipartite entanglement in four-qubit graph states. Eur. Phys. J. D 70, 62 (2016). https://doi.org/10.1140/epjd/e2016-60555-5

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  • DOI: https://doi.org/10.1140/epjd/e2016-60555-5

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