Entanglement detection via condition of quantum correlation

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dc.creatorLi, Che-Ming
dc.creatorHsu, Li-Yi
dc.creatorChen, Yueh-Nan
dc.creatorChuu, Der-San
dc.creatorBrandes, Tobias
dc.date2007-09-13
dc.date.accessioned2026-07-07T08:29:16Z
dc.date.available2026-07-07T08:29:16Z
dc.descriptionWe develop a novel necessary condition of quantum correlation. It is utilized to construct $d$-level bipartite Bell-type inequality which is strongly resistant to noise and requires only analyses of $O(d)$ measurement outcomes compared to the previous result $O(d^{2})$. Remarkably, a connection between the arbitrary high-dimensional bipartite Bell-type inequality and entanglement witnesses is found. Through the necessary condition of quantum correlation, we propose that the witness operators to detect truly multipartite entanglement for a generalized Greenberger-Horne-Zeilinger (GHZ) state with two local measurement settings and a four-qubit singlet state with three settings. Moreover, we also propose the first robust entanglement witness to detect four-level tripartite GHZ state with only two local measurement settings.
dc.identifierhttps://arxiv.org/abs/0709.1982
dc.identifierhttp://arxiv.org/abs/0709.1982
dc.identifierPHYSICAL REVIEW A 76, 032313 2007
dc.identifierdoi:10.1103/PhysRevA.76.032313
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/137907
dc.subjectQuantum Physics
dc.titleEntanglement detection via condition of quantum correlation
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