Quantum entanglement estimation via symmetric measurement based positive maps

• URL: http://arxiv.org/abs/2405.11741v1
• Date: Mon, 20 May 2024 02:43:51 GMT
• Title: Quantum entanglement estimation via symmetric measurement based positive maps
• Authors: Jiaxin Li, Hongmei Yao, Shao-Ming Fei, Zhaobing Fan, Haitao Ma,
• Abstract summary: We present positive and trace-preserving maps based on symmetric measurements. We show by detailed examples that our separability criteria, entanglement witnesses and lower bounds can detect and estimate the quantum entanglement better than the related existing results.
• Score: 8.806856261477007
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We provide a class of positive and trace-preserving maps based on symmetric measurements. From these positive maps we present separability criteria, entanglement witnesses, as well as the lower bounds of concurrence. We show by detailed examples that our separability criteria, entanglement witnesses and lower bounds can detect and estimate the quantum entanglement better than the related existing results.

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