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arXiv · 2503.16291

A note on lower bounds of concurrence for arbitrary dimensional bipartite quantum states

Zhi-Bo Chen·Shao-Ming Fei
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Abstract

Quantification of quantum entanglement plays a crucial role in the study of quantum information tasks. We present analytical lower bounds for both concurrence and 2-concurrence based on the correlation matrices of bipartite quantum states. Compared with other related lower bounds, our approach provides a better estimation of the entanglement, particularly for states with large purity.

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Zhi-Bo Chen, Shao-Ming Fei. 2025-03-20. A note on lower bounds of concurrence for arbitrary dimensional bipartite quantum states. https://doi.org/10.1088/1555-6611%2Fadbadd

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