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arXiv · 0903.0713

Entanglement, detection, and geometry of non-classical States

Kisik Kim·Jaewan Kim·Joonwoo Bae
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Abstract

Non-classical states that are characterized by their non-positive quasi-probabilities in phase space are known to be the basis for various quantum effects. In this work, we investigate the interrelation between the non-classicality and entanglement, and then characterize the non-classicality that precisely corresponds to entanglement. The results naturally follow from two findings: one is the general structure among non-classical, entangled, separable, and classical states over Hermitian operators, and the other a general scheme to detect non-classical states.

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Kisik Kim, Jaewan Kim, Joonwoo Bae. 2010-10-11. Entanglement, detection, and geometry of non-classical States. https://doi.org/10.1103/physreva.82.042105

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