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Bell correlations between spatially separated pairs of atoms

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0 Published in 2019 at "Nature Communications"

DOI: 10.1038/s41467-019-12192-8

Abstract: Bell correlations are a foundational demonstration of how quantum entanglement contradicts the classical notion of local realism. Rigorous validation of quantum nonlocality have only been achieved between solid-state electron spins, internal states of trapped atoms,… read more here.

Keywords: quantum; separated pairs; spatially separated; bell correlations ... See more keywords

Concentration phenomena in the geometry of Bell correlations

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0 Published in 2018 at "Physical Review A"

DOI: 10.1103/physreva.98.062114

Abstract: Bell's theorem shows that local measurements on entangled states give rise to correlations incompatible with local hidden variable models. The degree of quantum nonlocality is not maximal though, as there are even more nonlocal theories… read more here.

Keywords: concentration phenomena; geometry bell; phenomena geometry; geometry ... See more keywords

Does large quantum Fisher information imply Bell correlations?

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0 Published in 2019 at "Physical Review A"

DOI: 10.1103/physreva.99.040101

Abstract: The quantum Fisher information (QFI) of certain multipartite entangled quantum states is larger than what is reachable by separable states, providing a metrological advantage. Are these nonclassical correlations strong enough to potentially violate a Bell… read more here.

Keywords: bell inequality; quantum fisher; bell correlations; fisher information ... See more keywords

Bell Correlations in Spin-Squeezed States of 500 000 Atoms.

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2 Published in 2017 at "Physical review letters"

DOI: 10.1103/physrevlett.118.140401

Abstract: Bell correlations, indicating nonlocality in composite quantum systems, were until recently only seen in small systems. Here, we demonstrate Bell correlations in squeezed states of 5×10^{5} ^{87}Rb atoms. The correlations are inferred using collective measurements… read more here.

Keywords: 500 000; correlations spin; squeezed states; states 500 ... See more keywords

Bell correlations between light and vibration at ambient conditions.

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1 Published in 2020 at "Science advances"

DOI: 10.1126/sciadv.abb0260

Abstract: Time-resolved Raman spectroscopy techniques offer various ways to study the dynamics of molecular vibrations in liquids or gases and optical phonons in crystals. While these techniques give access to the coherence time of the vibrational… read more here.

Keywords: correlations light; vibration ambient; vibration; ambient conditions ... See more keywords