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arXiv · 1303.6403

Multipartite Entanglement Witnesses

J. Sperling·W. Vogel
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Abstract

We derive a set of algebraic equations, the so-called multipartite separability eigenvalue equations. Based on their solutions, we introduce a universal method for the construction of multipartite entanglement witnesses. We witness multipartite entanglement of $10^3$ coupled quantum oscillators, by solving our basic equations analytically. This clearly demonstrates the feasibility of our method for studying ultra-high orders of multipartite entanglement in complex quantum systems.

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J. Sperling, W. Vogel. 2013-03-26. Multipartite Entanglement Witnesses. https://doi.org/10.1103/physrevlett.111.110503

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