Calculating concentratable entanglement in graph states

Calculating concentratable entanglement in graph states
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DOI:
10.1103/physreva.106.042411
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发表时间:
2022-10-10
期刊:
影响因子:
2.9
通讯作者:
Kok, Pieter
Kok, Pieter
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Cullen, Alice R.;Kok, Pieter

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我们提出了一种方法来计算纯度的减少状态的图状态完全在稳定器的形式主义,只使用稳定器生成器为一个给定的状态。我们应用这种方法来找到图形状态的可集中纠缠,示例包括任何图形状态中的单个量子比特,提出用于量子中继器的状态,以及最大化和最小化整体可集中纠缠的状态。
We propose a method to calculate the purity of reduced states of graph states entirely within the stabilizer formalism, using only the stabilizer generators for a given state. We apply this method to find the concentratable entanglement of graph states, with examples including a single qubit within any graph state, states proposed for use in quantum repeaters, and states that maximize and minimize the overall concentratable entanglement.