量子纠缠
统计物理学
计算机科学
物理
统计
计量经济学
数学
量子力学
量子
作者
Yiding Wang,Tinggui Zhang,Xiaofen Huang,Shao-Ming Fei
出处
期刊:Cornell University - arXiv
日期:2024-05-07
标识
DOI:10.48550/arxiv.2405.04754
摘要
Quantum entanglement plays a key role in quantum computation and quantum information processing. It is of great significance to find efficient and experimentally friend separability criteria to detect entanglement. In this paper, we firstly propose two easily used entanglement criteria based on matrix moments. The first entanglement criterion only uses the first two realignment moments of a density matrix. The second entanglement criterion is based on the moments related to the partially transposed matrix. By detailed examples we illustrate the effectiveness of these criteria in detecting entanglement. Moreover, we provide an experimentally measurable lower bound of concurrence based on these moments. Finally, we present both bipartite and genuine tripartite entanglement measures based on the moments of the reduced states. By detailed examples, we show that our entanglement measures characterize the quantum entanglement in a more fine ways than the existing measures.
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