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arXiv · 1911.04649

Probing Genuine Multipartite Entanglement in Large Systems

Lucas B. Vieira·Diego L. Braga Ferreira·Thiago O. Maciel·Reinaldo O. Vianna
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Abstract

We introduce a new kind of Entanglement Witness which is appropriate for studying genuine multipartite entanglement in large systems. The witness operator has a form that fits naturally to quantum states represented by tensor networks. It opens up novel routes for investigating properties of condensed matter systems, and gives a new perspective to understand many-body quantum correlations. We illustrate the potential of this new operator with a GHZ state, and apply the method to a transverse Ising model with the well-known approach of Matrix Product States and Matrix Product Operators for a hundred spins.

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Lucas B. Vieira, Diego L. Braga Ferreira, Thiago O. Maciel, Reinaldo O. Vianna. 2019-11-12. Probing Genuine Multipartite Entanglement in Large Systems. https://arxiv.org/abs/1911.04649

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