1. Characterization of Multipartite non-Gaussian Entanglement Structure
- Author
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Tian, Mingsheng, Gao, Xiaoting, Jing, Boxuan, Sun, Feng-Xiao, Fadel, Matteo, and He, Qiongyi
- Subjects
Quantum Physics - 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 arbitrary continuous variable states, which also reveals genuine multipartite entanglement. By leveraging the quantum Fisher information, we propose a criterion for characterizing entanglement and offer 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 10000 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.
- Published
- 2024