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Recovering information in probabilistic quantum teleportation

dc.contributor.authorRoa L.
dc.contributor.authorEspinoza A.
dc.contributor.authorMuñoz A.
dc.contributor.authorLadrón de Guevara M.L.
dc.date.accessioned2020-09-02T22:27:02Z
dc.date.available2020-09-02T22:27:02Z
dc.date.issued2019
dc.identifier10.1007/s11467-019-0939-7
dc.identifier.citation14, 6, -
dc.identifier.issn20950462
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6031
dc.descriptionIn this paper we redesign the probabilistic teleportation scheme considered in Phys. Rev. A61, 034301 (2000) by Wan-Li Li et al., where the optimal state extraction protocol complements the basic teleportation process with a partially entangled pure state channel, in order to transfer the unknown state with fidelity 1. Unlike that scheme, where the information of the unknown state is lost if the state extraction fails, our proposal teleports exactly and optimally an unknown state, and allows to recover faithfully that state when the process has not succeeded. In order to study the resilience of the scheme, we apply it to the teleportation problem through a quantum channel in a mixed state with pure dephasing. We find that a successful process transfers an unfaithful state, namely, the outcome state acquires the decoherence of the channel, but the unknown state is recovered by the sender with fidelity 1 if the teleportation fails. In addition, in this case, the fidelity of the teleported state has quantum features only if the channel has an amount of entanglement different from zero. © 2019, Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature.
dc.language.isoen
dc.publisherHigher Education Press
dc.subjectquantum information
dc.subjectteleportation
dc.titleRecovering information in probabilistic quantum teleportation
dc.typeArticle


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