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Experimental self-testing for photonic graph states

Authors :
Jia-Min Xu
Qing Zhou
Yu-Xiang Yang
Zi-Mo Cheng
Xin-Yu Xu
Zhi-Cheng Ren
Xi-Lin Wang
Hui-Tian Wang
Publication Year :
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 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.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....85d25743749ea56ca1b812c49cbcc1c0