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Author  |
Tian, M.S.; Gao, X.T.; Jing, B.X.; Sun, F.X.; Fadel, M.; Gessner, M.; He, Q.Y. |
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Title |
Characterizing the Multipartite Entanglement Structure of Non-Gaussian Continuous-Variable States with a Single Evolution Operator |
Type |
Journal Article |
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Year |
2025 |
Publication |
Physical Review Letters |
Abbreviated Journal |
Phys. Rev. Lett. |
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Volume |
135 |
Issue |
14 |
Pages |
140201 - 7pp |
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Abstract |
Multipartite entanglement is an essential resource for quantum information tasks, but characterizing entanglement structures in continuous-variable systems remains challenging, especially in multimode nonGaussian scenarios. In this Letter, we introduce an efficient method for detecting multipartite entanglement structures in continuous-variable states. Based on the quantum Fisher information, we propose a systematic approach to identify an encoding operator that can efficiently capture the quantum correlations in multimode non-Gaussian states. We demonstrate the effectiveness of our method on over 105 randomly generated multimode-entangled quantum states, achieving a very high success rate in entanglement detection. Additionally, the robustness of our method can be considerably enhanced against losses by expanding the set of accessible operators. This Letter provides a general framework for characterizing entanglement structures in diverse continuous-variable systems, enabling a number of experimentally relevant applications. |
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Address |
[Tian, Mingsheng; Gao, Xiaoting; Jing, Boxuan; Sun, Fengxiao; He, Qiongyi] Peking Univ, Frontiers Sci Ctr Nanooptoelectron, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China, Email: qiongyihe@pku.edu.cn |
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Publisher |
Amer Physical Soc |
Place of Publication |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
0031-9007 |
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Notes |
WOS:001587121300007 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6882 |
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