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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Framework for classifying logical operators in stabilizer codes
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Framework for classifying logical operators in stabilizer codes

机译:用于在稳定器代码中对逻辑运算符进行分类的框架

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摘要

Entanglement, as studied in quantum information science, and nonlocal quantum correlations, as studiedin condensed matter physics, are fundamentally akin to each other. However, their relationship is often hard toquantify due to the lack of a general approach to study both on the same footing. In particular, while entanglementand nonlocal correlations are properties of states, both arise from symmetries of global operators that commutewith the system Hamiltonian. Here, we introduce a framework for completely classifying the local and nonlocalproperties of all such global operators, given the Hamiltonian and a bipartitioning of the system. This frameworkis limited to descriptions based on stabilizer quantum codes, but may be generalized. We illustrate the use of thisframework to study entanglement and nonlocal correlations by analyzing global symmetries in topological order,distribution of entanglement, and entanglement entropy.
机译:量子信息科学中研究的纠缠和凝聚态物理学中研究的非局域量子相关在本质上是相似的。但是,由于缺乏在相同基础上研究两者的通用方法,因此常常很难量化它们之间的关系。特别地,尽管纠缠和非局部相关是状态的属性,但这两者都源自与系统哈密顿量相通的全局算子的对称性。在这里,我们介绍了一个框架,给定哈密顿量和系统的二分法,可以对所有此类全局运算符的局部和非局部属性进行完全分类。该框架限于基于稳定剂量子代码的描述,但是可以被概括。我们通过分析拓扑顺序中的全局对称性,纠缠的分布和纠缠熵来说明此框架用于研究纠缠和非局部相关性。

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