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Quantifying Coherence and Genuine Multipartite Entanglement : A Framework Based on Witness Operators and Frobenius Norm Distance (2503.09976v1)

Published 13 Mar 2025 in quant-ph

Abstract: Quantifying the entanglement and coherence of quantum systems is a topic of significant theoretical and practical interest. In this paper, we propose a method to evaluate lower bounds for several widely used coherence measures and genuine multipartite entanglement (GME) measures. Our approach, which is resource-efficient and computationally feasible, provides bounds of coherence and GME measures with the help of witnesses by the F-norm. Finally, we present a practical framework for estimating these quantum resources in various physical scenarios.

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