Observation of genuine one-way Einstein-Podolsky-Rosen steering
Within the hierarchy of inseparable quantum correlations, Einstein-Podolsky-Rosen steering is distinguished from both entanglement and Bell nonlocality by its asymmetry - there exist conditions where the steering phenomenon changes from being observable to not observable, simply by exchanging the ro...
| Main Authors: | , , , , |
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| Format: | Journal article |
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American Physical Society
2016
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| _version_ | 1826284919854202880 |
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| author | Wollmann, S Walk, N Bennet, A Wiseman, H Pryde, G |
| author_facet | Wollmann, S Walk, N Bennet, A Wiseman, H Pryde, G |
| author_sort | Wollmann, S |
| collection | OXFORD |
| description | Within the hierarchy of inseparable quantum correlations, Einstein-Podolsky-Rosen steering is distinguished from both entanglement and Bell nonlocality by its asymmetry - there exist conditions where the steering phenomenon changes from being observable to not observable, simply by exchanging the role of the two measuring parties. While this one-way steering feature has been previously demonstrated for the restricted class of Gaussian measurements, for the general case of positive-operator-valued measures even its theoretical existence has only recently been settled. Here, we prove, and then experimentally observe, the one-way steerability of an experimentally practical class of entangled states in this general setting. As well as its foundational significance, the demonstration of fundamentally asymmetric nonlocality also has practical implications for the distribution of the trust in quantum communication networks. |
| first_indexed | 2024-03-07T01:21:05Z |
| format | Journal article |
| id | oxford-uuid:905a8454-113b-4d5e-a902-028f4cd774a1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:21:05Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:905a8454-113b-4d5e-a902-028f4cd774a12022-03-26T23:11:05ZObservation of genuine one-way Einstein-Podolsky-Rosen steeringJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:905a8454-113b-4d5e-a902-028f4cd774a1Symplectic Elements at OxfordAmerican Physical Society2016Wollmann, SWalk, NBennet, AWiseman, HPryde, GWithin the hierarchy of inseparable quantum correlations, Einstein-Podolsky-Rosen steering is distinguished from both entanglement and Bell nonlocality by its asymmetry - there exist conditions where the steering phenomenon changes from being observable to not observable, simply by exchanging the role of the two measuring parties. While this one-way steering feature has been previously demonstrated for the restricted class of Gaussian measurements, for the general case of positive-operator-valued measures even its theoretical existence has only recently been settled. Here, we prove, and then experimentally observe, the one-way steerability of an experimentally practical class of entangled states in this general setting. As well as its foundational significance, the demonstration of fundamentally asymmetric nonlocality also has practical implications for the distribution of the trust in quantum communication networks. |
| spellingShingle | Wollmann, S Walk, N Bennet, A Wiseman, H Pryde, G Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title | Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title_full | Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title_fullStr | Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title_full_unstemmed | Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title_short | Observation of genuine one-way Einstein-Podolsky-Rosen steering |
| title_sort | observation of genuine one way einstein podolsky rosen steering |
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