dc.contributor.authorChen, Jing-Ling
dc.contributor.authorSu, Hong-Yi
dc.contributor.authorXu, Zhen-Peng
dc.contributor.authorWu, Yu-Chun
dc.contributor.authorWu, Chunfeng
dc.contributor.authorYe, Xiang-Jun
dc.contributor.authorŻukowski, Marek
dc.contributor.authorKwek, Leong Chuan
dc.identifier.citationChen, J.-L., Su, H.-Y., Xu, Z.-P., Wu, Y.-C., Wu, C., Ye, X.-J., et al. (2015). Beyond Gisin’s theorem and its applications : violation of local realism by two-party Einstein-Podolsky-Rosen steering. Scientific Reports, 5, 11624-.en_US
dc.description.abstractWe demonstrate here that for a given mixed multi-qubit state if there are at least two observers for whom mutual Einstein-Podolsky-Rosen steering is possible, i.e. each observer is able to steer the other qubits into two different pure states by spontaneous collapses due to von Neumann type measurements on his/her qubit, then nonexistence of local realistic models is fully equivalent to quantum entanglement (this is not so without this condition). This result leads to an enhanced version of Gisin’s theorem (originally: all pure entangled states violate local realism). Local realism is violated by all mixed states with the above steering property. The new class of states allows one e.g. to perform three party secret sharing with just pairs of entangled qubits, instead of three qubit entanglements (which are currently available with low fidelity). This significantly increases the feasibility of having high performance versions of such protocols. Finally, we discuss some possible applications.en_US
dc.relation.ispartofseriesScientific reportsen_US
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/en_US
dc.subjectDRNTU::Engineering::Materials::Functional materials
dc.titleBeyond Gisin’s theorem and its applications : violation of local realism by two-party Einstein-Podolsky-Rosen steeringen_US
dc.typeJournal Article
dc.contributor.researchInstitute of Advanced Studiesen_US
dc.description.versionPublished versionen_US

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