Chinese Science Bulletin

, Volume 54, Issue 1, pp 158–162

Arbitrarily long distance quantum communication using inspection and power insertion

  • WanYing Wang
  • Chuan Wang
  • GuangYu Zhang
  • GuiLu Long
Brief Communication/Quantum Information

DOI: 10.1007/s11434-008-0581-1

Cite this article as:
Wang, W., Wang, C., Zhang, G. et al. Chin. Sci. Bull. (2009) 54: 158. doi:10.1007/s11434-008-0581-1

Abstract

The biggest obstacle for long distance quantum communication is the channel loss and the channel noise on photons. In this paper, a method to solve this problem was analyzed using inspection and power insertion (IPI). It is proved that quantum communication may be established over arbitrarily long distance using this technology. The amount of resources required is a polynomial function of the distance. IPI is proposed as a general technique to prolong quantum secure direct communication where secret messages are transmitted directly over a quantum channel.

Keywords

inspection and power insertion long distance quantum communication quantum key distribution quantum secure direct communication 

Copyright information

© Science in China Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • WanYing Wang
    • 1
    • 2
  • Chuan Wang
    • 1
    • 2
  • GuangYu Zhang
    • 1
    • 3
  • GuiLu Long
    • 1
    • 2
  1. 1.Department of PhysicsTsinghua UniversityBeijingChina
  2. 2.Tsinghua National Laboratory for Information Science and TechnologyTsinghua UniversityBeijingChina
  3. 3.College of Applied ScienceHarbin University of Science and TechnologyBeijingChina

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