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dc.contributor.authorZhang, Chao
dc.contributor.authorCheng, Shuming
dc.contributor.authorLi, Li
dc.contributor.authorLiang, Qiu-Yue
dc.contributor.authorLiu, Bi-Heng
dc.contributor.authorHuang, Yun-Feng
dc.contributor.authorLi, Chuan-Feng
dc.contributor.authorGuo, Guang-Can
dc.contributor.authorHal, Michael JW
dc.contributor.authorWiseman, Howard M
dc.contributor.authorPryde, Geoff J
dc.date.accessioned2019-06-19T13:06:50Z
dc.date.available2019-06-19T13:06:50Z
dc.date.issued2019
dc.identifier.issn0031-9007
dc.identifier.doi10.1103/PhysRevLett.122.070402
dc.identifier.urihttp://hdl.handle.net/10072/384444
dc.description.abstractThe set of all qubit states that can be steered to by measurements on a correlated qubit is predicted to form an ellipsoid—called the quantum steering ellipsoid—in the Bloch ball. This ellipsoid provides a simple visual characterization of the initial two-qubit state, and various aspects of entanglement are reflected in its geometric properties. We experimentally verify these properties via measurements on many different polarization-entangled photonic qubit states. Moreover, for pure three-qubit states, the volumes of the two quantum steering ellipsoids generated by measurements on the first qubit are predicted to satisfy a tight monogamy relation, which is strictly stronger than the well-known monogamy of entanglement for concurrence. We experimentally verify these predictions, using polarization and path entanglement. We also show experimentally that this monogamy relation can be violated by a mixed entangled state, which nevertheless satisfies a weaker monogamy relation.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherAMER PHYSICAL SOC
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto10
dc.relation.ispartofissue7
dc.relation.ispartofjournalPHYSICAL REVIEW LETTERS
dc.relation.ispartofvolume122
dc.subject.fieldofresearchMathematical sciences
dc.subject.fieldofresearchPhysical sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode49
dc.subject.fieldofresearchcode51
dc.subject.fieldofresearchcode40
dc.titleExperimental Validation of Quantum Steering Ellipsoids and Tests of Volume Monogamy Relations
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2019 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorWiseman, Howard M.
gro.griffith.authorPryde, Geoff


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