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dc.contributor.authorYu, Shang
dc.contributor.authorMeng, Yu
dc.contributor.authorPatel, Raj B
dc.contributor.authorWang, Yi-Tao
dc.contributor.authorKe, Zhi-Jin
dc.contributor.authorLiu, Wei
dc.contributor.authorLi, Zhi-Peng
dc.contributor.authorYang, Yuan-Ze
dc.contributor.authorZhang, Wen-Hao
dc.contributor.authorTang, Jian-Shun
dc.contributor.authorLi, Chuan-Feng
dc.contributor.authorGuo, Guang-Can
dc.date.accessioned2021-03-11T04:28:42Z
dc.date.available2021-03-11T04:28:42Z
dc.date.issued2020
dc.identifier.issn0031-9007en_US
dc.identifier.doi10.1103/PhysRevLett.125.060502en_US
dc.identifier.urihttp://hdl.handle.net/10072/403076
dc.description.abstractWe present an experimental approach to construct a dephrasure channel that contains both dephasing and erasure noises and can be used as an efficient tool to study the superadditivity of coherent information. Using a three-fold dephrasure channel, the superadditivity of coherent information is observed, and a substantial gap is found between the zero single-letter coherent information and zero quantum capacity. Particularly, we find that, when the coherent information of n channel uses is zero, with a larger number of channel uses the quantum capacity becomes positive. These phenomena exhibit a more obvious superadditivity of coherent information than previous works and demonstrate a higher threshold for nonzero quantum capacity. Such novel channels built in our experiment also can provide a useful platform to study the nonadditive properties of coherent information and quantum channel capacity.en_US
dc.description.peerreviewedYesen_US
dc.languageEnglishen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofissue6en_US
dc.relation.ispartofjournalPhysical Review Lettersen_US
dc.relation.ispartofvolume125en_US
dc.subject.fieldofresearchMathematical Sciencesen_US
dc.subject.fieldofresearchPhysical Sciencesen_US
dc.subject.fieldofresearchEngineeringen_US
dc.subject.fieldofresearchcode01en_US
dc.subject.fieldofresearchcode02en_US
dc.subject.fieldofresearchcode09en_US
dc.subject.keywordsScience & Technologyen_US
dc.subject.keywordsPhysical Sciencesen_US
dc.subject.keywordsPhysics, Multidisciplinaryen_US
dc.subject.keywordsPhysicsen_US
dc.subject.keywordsQUANTUM-CHANNELen_US
dc.titleExperimental Observation of Coherent-Information Superadditivity in a Dephrasure Channelen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Articlesen_US
dcterms.bibliographicCitationYu, S; Meng, Y; Patel, RB; Wang, Y-T; Ke, Z-J; Liu, W; Li, Z-P; Yang, Y-Z; Zhang, W-H; Tang, J-S; Li, C-F; Guo, G-C, Experimental Observation of Coherent-Information Superadditivity in a Dephrasure Channel, Physical Review Letters, 2020, 125 (6)en_US
dcterms.dateAccepted2020-07-17
dc.date.updated2021-03-11T03:31:16Z
gro.hasfulltextNo Full Text
gro.griffith.authorPatel, Raj B.


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