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Not all entangled states violate Leggetts crypto-nonlocality

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 نشر من قبل Cyril Branciard
 تاريخ النشر 2013
  مجال البحث فيزياء
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 تأليف Cyril Branciard




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This note is a reply to M. Navascues claim that all entangled states violate Leggetts crypto-nonlocality [arXiv:1303.5124v2]. I argue that such a conclusion can only be reached if one introduces additional assumptions that further restrict Leggetts notion of crypto-nonlocality. If a contrario one sticks only to Leggetts original axioms, there exist entangled states whose correlations are always compatible with Leggetts crypto-nonlocality---which is thus a genuinely different concept from quantum separability. I clarify in this note the relation between these two notions, together also with Bells assumption of local causality.



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