Leggio Bruno, Napoli Anna, Nakazato Hiromichi, Messina Antonino
Laboratoire Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCB Lyon 1, CNRS, INRA, Inria, 69342 Lyon, France.
Dipartimento di Fisica e Chimica-Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, I-90123 Palermo, Italy.
Entropy (Basel). 2020 Jan 1;22(1):62. doi: 10.3390/e22010062.
In the general framework of d 1 × d 2 mixed states, we derive an explicit bound for bipartite negative partial transpose (NPT) entanglement based on the mixedness characterization of the physical system. The derived result is very general, being based only on the assumption of finite dimensionality. In addition, it turns out to be of experimental interest since some purity-measuring protocols are known. Exploiting the bound in the particular case of thermal entanglement, a way to connect thermodynamic features to the monogamy of quantum correlations is suggested, and some recent results on the subject are given a physically clear explanation.
在(d_1×d_2)混合态的一般框架下，我们基于物理系统的混合特性推导了二分体负偏置转置（NPT）纠缠的显式界限。推导结果非常通用，仅基于有限维的假设。此外，由于已知一些纯度测量协议，它具有实验意义。在热纠缠的特殊情况下利用该界限，提出了一种将热力学特征与量子关联的一夫一妻制联系起来的方法，并对该主题的一些最新结果给出了清晰的物理解释。
