Optimal architectures for long distance quantum communication.

Journal Article (Journal Article)

Despite the tremendous progress of quantum cryptography, efficient quantum communication over long distances (≥ 1000 km) remains an outstanding challenge due to fiber attenuation and operation errors accumulated over the entire communication distance. Quantum repeaters (QRs), as a promising approach, can overcome both photon loss and operation errors, and hence significantly speedup the communication rate. Depending on the methods used to correct loss and operation errors, all the proposed QR schemes can be classified into three categories (generations). Here we present the first systematic comparison of three generations of quantum repeaters by evaluating the cost of both temporal and physical resources, and identify the optimized quantum repeater architecture for a given set of experimental parameters for use in quantum key distribution. Our work provides a roadmap for the experimental realizations of highly efficient quantum networks over transcontinental distances.

Full Text

Duke Authors

Cited Authors

  • Muralidharan, S; Li, L; Kim, J; Lütkenhaus, N; Lukin, MD; Jiang, L

Published Date

  • February 2016

Published In

Volume / Issue

  • 6 /

Start / End Page

  • 20463 -

PubMed ID

  • 26876670

Pubmed Central ID

  • PMC4753438

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

International Standard Serial Number (ISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/srep20463


  • eng