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Lower Bounds of Entanglement Quantifiers Based On Entanglement Witnesses

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arxiv 2312.17620 v1 pith:L576OM26 submitted 2023-12-29 quant-ph

Xian Shi This is my paper · ORCID
classification quant-ph
keywords entanglementboundslowermeasurebipartitechallengingclassesconcurrence
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To quantify the entanglement of bipartite systems in terms of some entanglement measure is a challenging problem in general, and it is much worse when the information about the system is less. In this manuscript, based on two classes of entanglement criteria, we present a method to obtain the lower bounds of the entanglement measures, concurrence, entanglement of formation, and geometrical entanglement measure.

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  1. Witness based nonlinear detection of quantum entanglement

    quant-ph 2025-02 conditional novelty 6.0 of 10

    A crossed multi-copy pairing of entanglement witnesses detects entangled states that the individual witnesses and the standard same-copy pairing fail to detect.

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