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arXiv 1502.00490quant-ph
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多部不可扩张纠缠基

Multipartite unextendible entangled basis

Yu Guo, Yanping Jia, Xiulan Li

备注：
16 pages. Some minors are corrected
发表信息：
Quantum Inf Process (2015) 14: 3553-3568
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摘要：

在[Phys.Rev.A 90（2014）054303]中提出了在$\mathbb{C}^{d_1}\otimes\mathbb{C}^{d_2}$中具有任意给定施密特数$k$（UEBk）的不可扩展纠缠基，$1<k\leq \min\{d_1,d_2\}$，其是在由少于$d_1d_2$的矢量组成的$d_1\otimes d_2$系统中具有施密特数$k$的正交归一化纠缠态的集合，所述矢量在互补空间中没有具有施密特数$k$的附加纠缠矢量。本文将其推广到多部情形，提出了一种由$m$ -部UEBk构造$(m+1)$ -部UEBk的一般方法（$m\geq 2$）.因此，我们表明，有无限多的UEBk在$\mathbb{C}^{d_1}\otimes\mathbb{C}^{d_2}\otimes\cdots\otimes\mathbb{C}^{d_N}$与任何尺寸和任何$N\geq3$。

英文摘要：

The unextendible entangled basis with any arbitrarily given Schmidt number $k$ (UEBk) in $\mathbb{C}^{d_1}\otimes\mathbb{C}^{d_2}$ is proposed in [Phys. Rev. A 90 (2014) 054303], $1<k\leq \min\{d_1,d_2\}$, which is a set of orthonormal entangled states with Schmidt number $k$ in a $d_1\otimes d_2$ system consisting of fewer than $d_1d_2$ vectors which have no additional entangled vectors with Schmidt number $k$ in the complementary space. In this paper, we extend it to multipartite case and a general way of constructing $(m+1)$-partite UEBk from $m$-partite UEBk is proposed ($m\geq 2$). Consequently, we show that there are infinitely many UEBks in $\mathbb{C}^{d_1}\otimes\mathbb{C}^{d_2}\otimes\cdots\otimes\mathbb{C}^{d_N}$ with any dimensions and any $N\geq3$.

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