Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering
We investigate the resources needed for secure teleportation of coherent states. We extend continuous variable teleportation to include quantum teleamplification protocols that allow nonunity classical gains and a preamplification or postattenuation of the coherent state. We show that, for arbitrary...
| Main Authors: | , , , |
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| Format: | Article |
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American Physical Society
2015
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| Online Access: | https://eprints.nottingham.ac.uk/40769/ |
| _version_ | 1848796129840332800 |
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| author | He, Qiongyi Rosales-Zárate, Laura Adesso, Gerardo Reid, Margaret D. |
| author_facet | He, Qiongyi Rosales-Zárate, Laura Adesso, Gerardo Reid, Margaret D. |
| author_sort | He, Qiongyi |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We investigate the resources needed for secure teleportation of coherent states. We extend continuous variable teleportation to include quantum teleamplification protocols that allow nonunity classical gains and a preamplification or postattenuation of the coherent state. We show that, for arbitrary Gaussian protocols and a significant class of Gaussian resources, two-way steering is required to achieve a teleportation fidelity beyond the no-cloning threshold. This provides an operational connection between Gaussian steerability and secure teleportation. We present practical recipes suggesting that heralded noiseless preamplification may enable high-fidelity heralded teleportation, using minimally entangled yet steerable resources. |
| first_indexed | 2025-11-14T19:43:05Z |
| format | Article |
| id | nottingham-40769 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:43:05Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-407692020-05-04T17:18:41Z https://eprints.nottingham.ac.uk/40769/ Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering He, Qiongyi Rosales-Zárate, Laura Adesso, Gerardo Reid, Margaret D. We investigate the resources needed for secure teleportation of coherent states. We extend continuous variable teleportation to include quantum teleamplification protocols that allow nonunity classical gains and a preamplification or postattenuation of the coherent state. We show that, for arbitrary Gaussian protocols and a significant class of Gaussian resources, two-way steering is required to achieve a teleportation fidelity beyond the no-cloning threshold. This provides an operational connection between Gaussian steerability and secure teleportation. We present practical recipes suggesting that heralded noiseless preamplification may enable high-fidelity heralded teleportation, using minimally entangled yet steerable resources. American Physical Society 2015-10-27 Article PeerReviewed He, Qiongyi, Rosales-Zárate, Laura, Adesso, Gerardo and Reid, Margaret D. (2015) Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering. Physical Review Letters, 115 (18). p. 180502. ISSN 1079-7114 http://dx.doi.org/10.1103/PhysRevLett.115.180502 doi:10.1103/PhysRevLett.115.180502 doi:10.1103/PhysRevLett.115.180502 |
| spellingShingle | He, Qiongyi Rosales-Zárate, Laura Adesso, Gerardo Reid, Margaret D. Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title | Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title_full | Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title_fullStr | Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title_full_unstemmed | Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title_short | Secure continuous variable teleportation and Einstein-Podolsky-Rosen steering |
| title_sort | secure continuous variable teleportation and einstein-podolsky-rosen steering |
| url | https://eprints.nottingham.ac.uk/40769/ https://eprints.nottingham.ac.uk/40769/ https://eprints.nottingham.ac.uk/40769/ |