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Comparison of Perfect and Quasi Werner States
arXiv - CS - Information Theory Pub Date : 2020-04-03 , DOI: arxiv-2004.03380
Fatima-Zahra Siyouri (Mohammed V University), Fatima El Azzouzi (Sidi Mohamed Ben Abdellah University)

In this paper, we investigate comparatively the behaviors of quantum discord and concurrence for Werner states based on two bipartite entangled squeezed states. The maximally entangled squeezed states are regarded as a perfect-Werner states, while the non-maximally entangled squeezed states are called quasi-Werner states. We show that, the behavior of the quantum correlations keep unchanged for these two types of states. However, the quantum correlations amount presents in perfect-Werner states is very higher than that presents in quasi-Werner ones. Furthermore, we show that for large values of squeezed parameter the quasi-Werner states approaches the perfect-Werner states qualitatively and quantitatively.

中文翻译:

完美状态和准 Werner 状态的比较

在本文中,我们比较研究了基于两个二分纠缠压缩态的维尔纳态的量子不和谐和并发行为。最大纠缠的挤压态被认为是完美的维尔纳态,而非最大纠缠的挤压态被称为准维尔纳态。我们表明,对于这两种状态,量子关联的行为保持不变。然而,完美维尔纳态的量子相关量远高于准维尔纳态的量子相关量。此外,我们表明,对于大值的压缩参数,准维尔纳状态在定性和定量上接近完美维尔纳状态。
更新日期:2020-04-08
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