Role of syndrome information on a one-way quantum repeater using teleportation-based error correction

Journal Article (Journal Article)

We investigate a quantum repeater scheme for quantum key distribution based on the work by S. Muralidharan [Phys. Rev. Lett. 112, 250501 (2014)]PRLTAO0031-900710.1103/PhysRevLett.112.250501. Our scheme extends that work by making use of error syndrome measurement outcomes available at the repeater stations. We show how to calculate the secret key rates for the case of optimizing the syndrome information, while the known key rate is based on a scenario of coarse graining the syndrome information. We show that these key rates can surpass the Pirandola-Laurenza-Ottaviani-Banchi bound on secret key rates of direct transmission over lossy bosonic channels.

Full Text

Duke Authors

Cited Authors

  • Namiki, R; Jiang, L; Kim, J; Lütkenhaus, N

Published Date

  • January 1, 2016

Published In

Volume / Issue

  • 94 / 5

Electronic International Standard Serial Number (EISSN)

  • 2469-9934

International Standard Serial Number (ISSN)

  • 2469-9926

Digital Object Identifier (DOI)

  • 10.1103/PhysRevA.94.052304

Citation Source

  • Scopus