基于子部分量子系统的W类态的多部分并发

IF 2.2 3区物理与天体物理 Q1 PHYSICS, MATHEMATICAL

Quantum Information Processing Pub Date : 2023-09-08 DOI:10.1007/s11128-023-04090-2

Wei Chen, Yanmin Yang, Shao-Ming Fei, Zhu-Jun Zheng, Yan-Ling Wang

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引用次数: 0

摘要

在考虑w类状态结构的基础上，基于\((N-1)\) -部划分研究了任意n部w类状态的并发问题。利用排列组合的方法，给出了任意n部w类态的n部并发和\((N-1)\) -部并发的解析公式和优美的关系。应用这些关系，我们给出了一些多部混合状态的较好的并发下界。给出了一个例子来证明我们的下界可以检测到更多的纠缠。

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Multipartite concurrence of W-class states based on sub-partite quantum systems

We study the concurrence for arbitrary N-partite W-class states based on the \((N-1)\)-partite partitions of subsystems by taking account to the structures of W-class states. By using the method of permutation and combination, we give some analytical formulas of concurrence and elegant relations between the N-partite concurrence and the \((N-1)\)-partite concurrence for arbitrary N-partite W-class states. Applying these relations, we present better lower bounds of concurrence for some multipartite mixed states. An example is given to demonstrate that our lower bounds can detect more entanglements.

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来源期刊

Quantum Information Processing 物理-物理：数学物理

CiteScore

4.10

自引率

20.00%

发文量

337

审稿时长

4.5 months

期刊介绍： Quantum Information Processing is a high-impact, international journal publishing cutting-edge experimental and theoretical research in all areas of Quantum Information Science. Topics of interest include quantum cryptography and communications, entanglement and discord, quantum algorithms, quantum error correction and fault tolerance, quantum computer science, quantum imaging and sensing, and experimental platforms for quantum information. Quantum Information Processing supports and inspires research by providing a comprehensive peer review process, and broadcasting high quality results in a range of formats. These include original papers, letters, broadly focused perspectives, comprehensive review articles, book reviews, and special topical issues. The journal is particularly interested in papers detailing and demonstrating quantum information protocols for cryptography, communications, computation, and sensing.