Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states
In this paper, we examine and compare two fundamentally different teleportation schemes: the well-known continuous-variable scheme of Vaidman, Braunstein, and Kimble (VBK) and a recently proposed hybrid scheme by Andersen and Ralph (AR). We analyze the teleportation of ensembles of arbitrary pure si...
| Main Authors: | , , |
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| Format: | Article |
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American Physical Society
2014
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| Online Access: | https://eprints.nottingham.ac.uk/47218/ |
| _version_ | 1848797492460650496 |
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| author | Kogias, Ioannis Ragy, Sammy Adesso, Gerardo |
| author_facet | Kogias, Ioannis Ragy, Sammy Adesso, Gerardo |
| author_sort | Kogias, Ioannis |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this paper, we examine and compare two fundamentally different teleportation schemes: the well-known continuous-variable scheme of Vaidman, Braunstein, and Kimble (VBK) and a recently proposed hybrid scheme by Andersen and Ralph (AR). We analyze the teleportation of ensembles of arbitrary pure single-mode Gaussian states using these schemes and see how they fare against the optimal measure-and-prepare strategies—the benchmarks. In the VBK case, we allow for nonunit gain tuning and additionally consider a class of non-Gaussian resources in order to optimize performance. The results suggest that the AR scheme may likely be a more suitable candidate for beating the benchmarks in the teleportation of squeezing, capable of achieving this for moderate resources in comparison to the VBK scheme. Moreover, our quantification of resources, whereby different protocols are compared at fixed values of the entanglement entropy or the mean energy of the resource states, brings into question any advantage due to non-Gaussianity for quantum teleportation of Gaussian states. |
| first_indexed | 2025-11-14T20:04:44Z |
| format | Article |
| id | nottingham-47218 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:04:44Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-472182020-05-04T16:47:41Z https://eprints.nottingham.ac.uk/47218/ Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states Kogias, Ioannis Ragy, Sammy Adesso, Gerardo In this paper, we examine and compare two fundamentally different teleportation schemes: the well-known continuous-variable scheme of Vaidman, Braunstein, and Kimble (VBK) and a recently proposed hybrid scheme by Andersen and Ralph (AR). We analyze the teleportation of ensembles of arbitrary pure single-mode Gaussian states using these schemes and see how they fare against the optimal measure-and-prepare strategies—the benchmarks. In the VBK case, we allow for nonunit gain tuning and additionally consider a class of non-Gaussian resources in order to optimize performance. The results suggest that the AR scheme may likely be a more suitable candidate for beating the benchmarks in the teleportation of squeezing, capable of achieving this for moderate resources in comparison to the VBK scheme. Moreover, our quantification of resources, whereby different protocols are compared at fixed values of the entanglement entropy or the mean energy of the resource states, brings into question any advantage due to non-Gaussianity for quantum teleportation of Gaussian states. American Physical Society 2014-05-23 Article PeerReviewed Kogias, Ioannis, Ragy, Sammy and Adesso, Gerardo (2014) Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states. Physical Review A, 89 (5). 052324-1-052324-11. ISSN 2469-9934 https://journals.aps.org/pra/abstract/10.1103/PhysRevA.89.052324 doi:10.1103/PhysRevA.89.052324 doi:10.1103/PhysRevA.89.052324 |
| spellingShingle | Kogias, Ioannis Ragy, Sammy Adesso, Gerardo Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title | Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title_full | Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title_fullStr | Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title_full_unstemmed | Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title_short | Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states |
| title_sort | continuous-variable versus hybrid schemes for quantum teleportation of gaussian states |
| url | https://eprints.nottingham.ac.uk/47218/ https://eprints.nottingham.ac.uk/47218/ https://eprints.nottingham.ac.uk/47218/ |