Certifying Network Topologies and Nonlocalities of Triangle Quantum Networks

Quantum networks promise unprecedented advantages in information processing and open up intriguing new opportunities in fundamental research, where network topology and network nonlocality fundamentally underlie these applications. Hence, the detections of network topology and nonlocality are crucia...

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Bibliographic Details
Published in:Physical review letters 2024-06, Vol.132 (24), p.240801, Article 240801
Main Authors: Mao, Ya-Li, Chen, Hu, Guo, Bixiang, Liu, Shiting, Li, Zheng-Da, Luo, Ming-Xing, Fan, Jingyun
Format: Article
Language:English
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Summary:Quantum networks promise unprecedented advantages in information processing and open up intriguing new opportunities in fundamental research, where network topology and network nonlocality fundamentally underlie these applications. Hence, the detections of network topology and nonlocality are crucial, which, however, remain an open problem. Here, we conceive and experimentally demonstrate to determine the network topology and network nonlocality hosted by a triangle quantum network comprising three parties, within and beyond Bell theorem, with a general witness operator for the first time. We anticipate that this unique approach may stimulate further studies toward the efficient characterization of large complex quantum networks so as to better harness the advantage of quantum networks for quantum information applications.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.132.240801