arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.04231quant-phcs.ITmath-phmath.ITmath.MP
收藏

量子插值系综:双正交多项式与平均熵

Quantum interpolating ensemble: Biorthogonal polynomials and average entropies

Lu Wei, Nicholas Witte

AI总结:

本文提出一种在 Hilbert-Schmidt 和 Bures-Hall 系综间插值的量子系综,计算了有限维系统的量子纯度与 von Neumann 熵平均值,并作为 $θ$-形变 Cauchy-Laguerre 双矩阵模型的特化,给出了相关双正交多项式的递推关系等通用新结果。

摘要:

密度矩阵形式化是研究量子信息处理中各种问题的基本工具。在密度矩阵空间中,最著名的测度是 Hilbert-Schmidt 和 Bures-Hall 系综。在这项工作中,对于有限维系统,明确计算了在这两个主要系综之间进行插值的系综的量子纯度和 von Neumann 熵的平均值。所提出的插值系综是 $θ$-形变 Cauchy-Laguerre 双矩阵模型的一个特化,并且给出了后一个系综的完整通用新结果,包括当 $θ$ 取正整数值时其相关双正交多项式满足的递推关系。

英文摘要:

The density matrix formalism is a fundamental tool in studying various problems in quantum information processing. In the space of density matrices, the most well-known measures are the Hilbert-Schmidt and Bures-Hall ensembles. In this work, the averages of quantum purity and von Neumann entropy for an ensemble that interpolates between these two major ensembles are explicitly calculated for finite-dimensional systems. The proposed interpolating ensemble is a specialization of the $θ$-deformed Cauchy-Laguerre two-matrix model and new results for this latter ensemble are given in full generality, including the recurrence relations satisfied by their associated bi-orthogonal polynomials when $θ$ assumes positive integer values.

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。

↑