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Physics Letters A
Article . 2022 . Peer-reviewed
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Preprint . 2022
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Article . 2022
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https://dx.doi.org/10.48550/ar...
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Contextuality and quantum discord

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Oct 2022Embargo end date: 01 Jan 2022 English Publisher:Elsevier BVJournal:Physics Letters A, volume 449, page 128,347 (issn: 0375-9601, Copyright policy )
Authors: Al-Qasimi, Asma;

doi: 10.1016/j.physleta.2022.128347 , 10.48550/arxiv.2208.01698

arXiv: 2208.01698

Contextuality and quantum discord

Abstract

One of the defining differences between classical and quantum systems is how measurements affect them. Here, we compare the approaches of contextuality and quantum discord in capturing quantum correlations in special classes of two-qubit states, demonstrating that although non-discordant states are non-contextual, discordant states are not always contextual.

5 pages, 1 figure

Related Organizations
Keywords

Quantum Physics, Contextuality in quantum theory, quantum correlations, FOS: Physical sciences, Quantum measurement theory, state operations, state preparations, Quantum discord, quantum physics, quantum information, Quantum information, communication, networks (quantum-theoretic aspects), quantum signatures, Quantum coherence, entanglement, quantum correlations, Quantum Physics (quant-ph)

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 2
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    		 Average
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
hybrid