二维绝对纠缠断裂子空间

IF 2.4 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Communications in Theoretical Physics Pub Date : 2024-07-23 DOI:10.1088/1572-9494/ad43d2

Jian Yan and Lin Chen

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引用次数: 0

摘要

纠缠断裂（EB）子空间决定了形成纠缠（EOF）的可加性，这是量子信息领域一个长期存在的问题。在系统维度相等的情况下，我们明确地构建了任何二方系统的二维 EB 子空间，并应用这些子空间构建了任意维度的 EB 空间。当系统维度不同时，我们还将介绍部分构造。然后，我们介绍一些系统的 EB 子空间的概念和性质，特别是绝对 EB 子空间。我们构建了一些绝对 EB 子空间的例子，并通过使用多量子比特 Dicke 状态构建了一些系统的 EB 子空间。

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Two-dimensional and absolutely entanglement-breaking subspaces

Entanglement-breaking (EB) subspaces determine the additivity of entanglement of formation (EOF), which is a long-standing issue in quantum information. We explicitly construct the two-dimensional EB subspaces of any bipartite system, when system dimensions are equal, and we apply the subspaces to construct EB spaces of arbitrary dimensions. We also present partial construction when system dimensions are different. Then, we present the notion and properties of EB subspaces for some systems, and in particular the absolute EB subspaces. We construct some examples of absolute EB subspaces, as well as EB subspaces for some systems by using multiqubit Dicke states.

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来源期刊

Communications in Theoretical Physics 物理-物理：综合

CiteScore

5.20

自引率

3.20%

发文量

6110

审稿时长

4.2 months

期刊介绍： Communications in Theoretical Physics is devoted to reporting important new developments in the area of theoretical physics. Papers cover the fields of: mathematical physics quantum physics and quantum information particle physics and quantum field theory nuclear physics gravitation theory, astrophysics and cosmology atomic, molecular, optics (AMO) and plasma physics, chemical physics statistical physics, soft matter and biophysics condensed matter theory others Certain new interdisciplinary subjects are also incorporated.