Multipartite continuous-variable entanglement

Details Multipartite continuous-variable entanglement Multipartite continuous-variable entanglement

2006-05-17

arxiv.org/abs/quant-ph/0605154v2

Physics

Quantum Physics

4 pages, 1 figures, modified and corrected version

Scientific paper

10.1103/PhysRevA.74.030302

Necessary and sufficient observable conditions for the nonnegativity of all partial transpositions of multi-mode quantum states are derived. The result is a hierarchy of inequalities for minors in terms of moments of the given state. Violations of any inequality is a sufficient condition for entanglement. Full entanglement can be certified for a manifold of multi-mode quantum states. A \textit{Mathematica} package is given for a systematic test of the hierarchy of conditions.

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