Metrological Characterization of Multipartite Continuous-Variable non-Gaussian Entanglement Structure

• URL: http://arxiv.org/abs/2408.12554v2
• Date: Sun, 6 Oct 2024 16:22:06 GMT
• Title: Metrological Characterization of Multipartite Continuous-Variable non-Gaussian Entanglement Structure
• Authors: Mingsheng Tian, Xiaoting Gao, Boxuan Jing, Feng-Xiao Sun, Matteo Fadel, Qiongyi He,
• Abstract summary: We introduce a method for detecting multipartite entanglement structures in continuous variable systems. We demonstrate the effectiveness of our method on over $105$ randomly generated multimode-entangled quantum states. This work provides a general framework for characterizing entanglement structures in diverse continuous variable systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multipartite entanglement is an essential resource for quantum information tasks, but characterizing entanglement structures in continuous variable systems remains challenging, especially in multimode non-Gaussian scenarios. In this work, we introduce a method for detecting multipartite entanglement structures in continuous variable states. By leveraging the quantum Fisher information, we propose a systematic approach to identify feasible operators that capture quantum correlations in multimode non-Gaussian states. We demonstrate the effectiveness of our method on over $10^5$ randomly generated multimode-entangled quantum states, achieving a high success rate in entanglement detection. Additionally, our method exhibits enhanced robustness against losses by expanding the set of accessible operators. This work provides a general framework for characterizing entanglement structures in diverse continuous variable systems, enabling a number of experimentally relevant applications.

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