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arxiv: 1307.6656 · v1 · pith:IT2M7YXQnew · submitted 2013-07-25 · 🪐 quant-ph

Characterization of four-qubit states via Bell inequalities

classification 🪐 quant-ph
keywords bellfour-qubitinequalitiesstatesquantumadditionbi-separablecharacterization
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A set of Bell inequalities classifying the quantum entanglement of four-qubit states is presented. These inequalities involve only two measurement settings per observer and can characterize fully separable, bi-separable and tri-separable quantum states. In addition, a quadratic inequality of the Bell operators for four-qubit systems is derived.

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