Quantum Information Processing

, Volume 1, Issue 1, pp 5–12

Approximate Quantum Error Correction

  • Benjamin Schumacher
  • Michael D. Westmoreland

DOI: 10.1023/A:1019653202562

Cite this article as:
Schumacher, B. & Westmoreland, M.D. Quantum Information Processing (2002) 1: 5. doi:10.1023/A:1019653202562


The errors that arise in a quantum channel can be corrected perfectly if and only if the channel does not decrease the coherent information of the input state. We show that, if the loss of coherent information is small, then approximate quantum error correction is possible.

PACS: 03.67.H, 03.65.U

quantum error correction 

Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Benjamin Schumacher
    • 1
  • Michael D. Westmoreland
    • 2
  1. 1.Department of PhysicsKenyon CollegeGambier
  2. 2.Department of Mathematical SciencesDenison UniversityGranville

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