https://doi.org/10.1140/epjp/s13360-024-05649-3
Regular Article
Lower bounds of entanglement quantifiers based on entanglement witnesses
College of Information Science and Technology, Beijing University of Chemical Technology, 100029, Beijing, China
Received:
13
July
2024
Accepted:
12
September
2024
Published online:
25
September
2024
How to quantify the entanglement of bipartite systems effectively is a challenging problem in general. In this manuscript, we derive a method to evaluate the entanglement of a bipartite state in terms of three well-known entanglement measures. The method here is easy to compute. At last, we apply the method to the witnesses obtained from mutually unbiased bases and spin-squeezing inequalities.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
