Recovering information in probabilistic quantum teleportation
MetadataShow full item record
Ladrón de Guevara M.L.
In 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.
Showing items related by title, author, creator and subject.
Synthesis of five known brassinosteroid analogs from hyodeoxycholic acid and their activities as plant-growth regulators (2020) Duran M.I.; González C.; Acosta A.; Olea A.F.; Díaz K.; Espinoza L. (MDPI AG, 2017)
BookLizana Muñoz, Verónica; Posada Lecompte, Margarita; Quiroz Arriagada, Felipe; Gómez Gálvez, Nicolás; Silva Espinoza, Carla; Brito Rodríguez, Sonia; Basualto Porra, Lorena; Flores Rivas, Claudia; Lizana Ibaceta, Ruth; Gálvez Méndez, Victoria; ... (Universidad Autónoma de Chile, 2020-09-01)
ArticleEstrada-Muñoz C.; Castillo D.; Vega-Muñoz A.; Boada-Grau J. (MDPI AG, 2020)