Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states
Understanding how quantum resources can be quantified and distributed over many parties has profound applications in quantum communication. As one of the most intriguing features of quantum mechanics, Einstein-Podolsky-Rosen (EPR) steering is a useful resource for secure quantum networks. By reconst...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
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American Physical Society
2017
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| Online Access: | https://eprints.nottingham.ac.uk/43570/ |
| _version_ | 1848796717170819072 |
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| author | Deng, Xiaowei Xiang, Yu Tian, Caixing Adesso, Gerardo He, Qiongyi Gong, Qihuang Su, Xiaolong Xie, Changde Peng, Kunchi |
| author_facet | Deng, Xiaowei Xiang, Yu Tian, Caixing Adesso, Gerardo He, Qiongyi Gong, Qihuang Su, Xiaolong Xie, Changde Peng, Kunchi |
| author_sort | Deng, Xiaowei |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Understanding how quantum resources can be quantified and distributed over many parties has profound applications in quantum communication. As one of the most intriguing features of quantum mechanics, Einstein-Podolsky-Rosen (EPR) steering is a useful resource for secure quantum networks. By reconstructing the covariance matrix of a continuous variable four-mode square Gaussian cluster state subject to asymmetric loss, we quantify the amount of bipartite steering with a variable number of modes per party, and verify recently introduced monogamy relations for Gaussian steerability, which establish quantitative constraints on the security of information shared among different parties. We observe a very rich structure for the steering distribution, and demonstrate one-way EPR steering of the cluster state under Gaussian measurements, as well as one-to-multimode steering. Our experiment paves the way for exploiting EPR steering in Gaussian cluster states as a valuable resource for multiparty quantum information tasks. |
| first_indexed | 2025-11-14T19:52:25Z |
| format | Article |
| id | nottingham-43570 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:52:25Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-435702020-05-04T18:49:02Z https://eprints.nottingham.ac.uk/43570/ Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states Deng, Xiaowei Xiang, Yu Tian, Caixing Adesso, Gerardo He, Qiongyi Gong, Qihuang Su, Xiaolong Xie, Changde Peng, Kunchi Understanding how quantum resources can be quantified and distributed over many parties has profound applications in quantum communication. As one of the most intriguing features of quantum mechanics, Einstein-Podolsky-Rosen (EPR) steering is a useful resource for secure quantum networks. By reconstructing the covariance matrix of a continuous variable four-mode square Gaussian cluster state subject to asymmetric loss, we quantify the amount of bipartite steering with a variable number of modes per party, and verify recently introduced monogamy relations for Gaussian steerability, which establish quantitative constraints on the security of information shared among different parties. We observe a very rich structure for the steering distribution, and demonstrate one-way EPR steering of the cluster state under Gaussian measurements, as well as one-to-multimode steering. Our experiment paves the way for exploiting EPR steering in Gaussian cluster states as a valuable resource for multiparty quantum information tasks. American Physical Society 2017-06-07 Article PeerReviewed Deng, Xiaowei, Xiang, Yu, Tian, Caixing, Adesso, Gerardo, He, Qiongyi, Gong, Qihuang, Su, Xiaolong, Xie, Changde and Peng, Kunchi (2017) Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states. Physical Review Letters, 118 (23). ISSN 1079-7114 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.230501 doi:10.1103/PhysRevLett.118.230501 doi:10.1103/PhysRevLett.118.230501 |
| spellingShingle | Deng, Xiaowei Xiang, Yu Tian, Caixing Adesso, Gerardo He, Qiongyi Gong, Qihuang Su, Xiaolong Xie, Changde Peng, Kunchi Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title | Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title_full | Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title_fullStr | Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title_full_unstemmed | Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title_short | Demonstration of monogamy relations for Einstein-Podolsky-Rosen steering in Gaussian cluster states |
| title_sort | demonstration of monogamy relations for einstein-podolsky-rosen steering in gaussian cluster states |
| url | https://eprints.nottingham.ac.uk/43570/ https://eprints.nottingham.ac.uk/43570/ https://eprints.nottingham.ac.uk/43570/ |