论文标题
使用一个不可分解的正图中的两Qutrits生成和检测绑定的纠缠
Generating and detecting bound entanglement in two-qutrits using a family of indecomposable positive maps
论文作者
论文摘要
绑定纠缠检测的问题是量子信息理论的一个挑战性方面，对于更高的维系统。在这里，我们提出了两个Qutrit系统的不可分解的阳性图，该系统可生成一类阳性部分转置（PPT）状态。构建了相应的证人操作员，并证明是弱最佳且可在本地实施的。此外，我们对不可分解的地图进行结构性物理近似，使其成为完全积极的地图，并找到一个新的PPT纠缠状态，该状态无法通过某些其他众所周知的纠缠检测标准可检测到。
The problem of bound entanglement detection is a challenging aspect of quantum information theory for higher dimensional systems. Here, we propose an indecomposable positive map for two-qutrit systems, which is shown to generate a class of positive partial transposed (PPT) states. A corresponding witness operator is constructed and shown to be weakly optimal and locally implementable. Further, we perform a structural physical approximation of the indecomposable map to make it a completely positive one, and find a new PPT entangled state which is not detectable by certain other well-known entanglement detection criteria.
