Ioannis Kogias
Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states
Kogias, Ioannis; Ragy, Sammy; Adesso, Gerardo
Authors
Sammy Ragy
Professor GERARDO ADESSO gerardo.adesso@nottingham.ac.uk
Professor of Mathematical Physics
Abstract
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.
Citation
Kogias, I., Ragy, S., & Adesso, G. (2014). Continuous-variable versus hybrid schemes for quantum teleportation of Gaussian states. Physical Review A, 89(5), https://doi.org/10.1103/PhysRevA.89.052324
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 23, 2014 |
Publication Date | May 23, 2014 |
Deposit Date | Oct 12, 2017 |
Publicly Available Date | Oct 12, 2017 |
Journal | Physical Review A |
Print ISSN | 2469-9926 |
Electronic ISSN | 2469-9934 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 89 |
Issue | 5 |
DOI | https://doi.org/10.1103/PhysRevA.89.052324 |
Public URL | https://nottingham-repository.worktribe.com/output/728284 |
Publisher URL | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.89.052324 |
Additional Information | ©2014 American Physical Society |
Contract Date | Oct 12, 2017 |
Files
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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