Experimental self-testing for photonic graph states release_7qasznwu4ngplg54s4vhxlbz3e

by Jia-Min Xu, Qing Zhou, Yu-Xiang Yang, Zi-Mo Cheng, Xin-Yu Xu, Zhi-Cheng Ren, Xi-Lin Wang, Hui-Tian Wang

Released as a article .

2021  

Abstract

Graph states -- one of the most representative families of multipartite entangled states, are important resources for multiparty quantum communication, quantum error correction, and quantum computation. Device-independent certification of highly entangled graph states plays a prominent role in the quantum information processing tasks. Here we have experimentally demonstrated device-independent certification for multipartite graph states, by adopting the robust self-testing scheme based on scalable Bell inequalities. Specifically, the prepared multi-qubit Greenberger-Horne-Zeilinger (GHZ) states and linear cluster states achieve a high degree of Bell violation, which are beyond the nontrivial bounds of the robust self-testing scheme. Furthermore, our work paves the way to the device-independent certification of complex multipartite quantum states.
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Date   2021-11-15
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arXiv  2111.07562v1
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