Estimating Parameterized Entanglement Measure

• URL: http://arxiv.org/abs/2206.07905v1
• Date: Thu, 16 Jun 2022 04:13:17 GMT
• Title: Estimating Parameterized Entanglement Measure
• Authors: Zhi-Wei Wei, Ming-Xing Luo, Shao-Ming Fei
• Abstract summary: The $q$-concurrence is a reasonable parameterized entanglement measure. We present tight lower bounds of the $q$-concurrence for arbitrary $qgeqslant 2$.
• Score: 2.9690504594380185
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The parameterized entanglement monotone, the $q$-concurrence, is also a reasonable parameterized entanglement measure. By exploring the properties of the $q$-concurrence with respect to the positive partial transposition and realignment of density matrices, we present tight lower bounds of the $q$-concurrence for arbitrary $q\geqslant 2$. Detailed examples are given to show that the bounds are better than the previous ones.

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