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Entropic Entanglement Criteria for Continuous Variables

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 نشر من قبل Stephen Walborn
 تاريخ النشر 2009
  مجال البحث فيزياء
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We derive several entanglement criteria for bipartite continuous variable quantum systems based on the Shannon entropy. These criteria are more sensitive than those involving only second-order moments, and are equivalent to well-known variance product tests in the case of Gaussian states. Furthermore, they involve only a pair of quadrature measurements, and will thus should prove extremely useful the experimental identification of entanglement.



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