Quantum data processing

  • Authors:

  • R. Ahlswede;P. Lober

  • Affiliations:

  • Fak. fur Math., Bielefeld Univ.;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2001

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Abstract

We prove a data processing inequality for quantum communication channels, which states that processing a received quantum state may never increase the mutual information between input and output states