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arXiv 2603.24902quant-phcs.EThep-lathep-phhep-th
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魔法与纠缠的帕累托前沿:双量子比特的情况

The Pareto Frontiers of Magic and Entanglement: The Case of Two Qubits

Quantum Theory Institute, CERN(量子理论研究所,CERN);Department of Physics and Astronomy, University of Alabama(阿拉巴马大学物理与天文学系)

Alexander Roman, Marco Knipfer, Jogi Suda Neto, Konstantin T. Matchev, Katia Matcheva, Sergei Gleyzer

AI总结:

研究双量子比特系统中魔法与纠缠的相互作用,确定最大魔法和最小魔法在给定纠缠水平下的帕累托前沿,并推导出分析公式。

摘要:

魔法与纠缠是两种广泛用于表征量子资源的度量。我们研究双量子比特系统中魔法与纠缠的相互作用,聚焦于两个极端:给定纠缠水平下的最大魔法和最小魔法。我们通过二阶Rényi熵$M_2$量化魔法,通过连通性$Δ$量化纠缠。我们发现最大魔法$M_2^{(max)}(Δ)$的帕累托前沿由三个独立段组成,而最小魔法$M_2^{(min)}(Δ)$的边界是一条连续线。我们为所有四种情况推导出简单的解析公式,并明确参数化所有不同量子状态的最大或最小魔法在给定纠缠水平下的状态。

英文摘要:

Magic and entanglement are two measures that are widely used to characterize quantum resources. We study the interplay between magic and entanglement in two-qubit systems, focusing on the two extremes: maximal magic and minimal magic for a given level of entanglement. We quantify magic by the Rényi entropy of order 2, $M_2$, and entanglement by the concurrence $Δ$. We find that the Pareto frontier of maximal magic $M_2^{(max)}(Δ)$ is composed of three separate segments, while the boundary of minimal magic $M_2^{(min)}(Δ)$ is a single continuous line. We derive simple analytical formulas for all these four cases, and explicitly parametrize all distinct quantum states of maximal or minimal magic at a given level of entanglement.

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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