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arXiv 2202.00600quant-phmath.MG
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特殊情报人员的空间塔。II。一些构造

Dimension towers of SICs. II. Some constructions

Ingemar Bengtsson, Basudha Srivastava

摘要:

SIC是有限维Hilbert空间中的极大等角紧框架。给定一个在$d$维上的SIC,有充分的证据表明,在$d(d-2)$维上总是存在一个对齐的SIC,它具有可预测的对称性和嵌入其中的较小的等角紧框架。我们提供了一个如何计算具有这些属性的$d(d-2)$维向量集的方法。它们由进入$d$维SIC的数字定义的某些子空间中的最大纠缠矢量组成。然而,该结构包含自由参数,我们还没有证明它们总是可以被选择,使得这些向量集之一是SIC。我们给出了一些工作的例子,我们希望,可以建议读者如何我们的建设可以得到改善。为简单起见,我们只限于奇维的情形。

英文摘要:

A SIC is a maximal equiangular tight frame in a finite dimensional Hilbert space. Given a SIC in dimension $d$, there is good evidence that there always exists an aligned SIC in dimension $d(d-2)$, having predictable symmetries and smaller equiangular tight frames embedded in them. We provide a recipe for how to calculate sets of vectors in dimension $d(d-2)$ that share these properties. They consist of maximally entangled vectors in certain subspaces defined by the numbers entering the $d$ dimensional SIC. However, the construction contains free parameters and we have not proven that they can always be chosen so that one of these sets of vectors is a SIC. We give some worked examples that, we hope, may suggest to the reader how our construction can be improved. For simplicity we restrict ourselves to the case of odd dimensions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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