Physics – Quantum Physics
Scientific paper
2007-07-25
Phys. Rev. A 76 (Dec. 2007) 062320
Physics
Quantum Physics
Minor changes so as to agree with published version
Scientific paper
10.1103/PhysRevA.76.062320
Quantum, in contrast to classical, information theory, allows for different incompatible types (or species) of information which cannot be combined with each other. Distinguishing these incompatible types is useful in understanding the role of the two classical bits in teleportation (or one bit in one-bit teleportation), for discussing decoherence in information-theoretic terms, and for giving a proper definition, in quantum terms, of ``classical information.'' Various examples (some updating earlier work) are given of theorems which relate different incompatible kinds of information, and thus have no counterparts in classical information theory.
Griffiths Robert B.
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