We compare and contrast the error probability and fidelity as measures of the quality of the receiver's measurement strategy for a quantum communications system. The error probability is a measure of the ability to retrieve classical information and the fidelity measures the retrieval of quantum information. We present the optimal measurement strategies for maximizing the fidelity given a source that encodes information on the symmetric qubit-states.
|Number of pages||11|
|Journal||Journal of Physics A: Mathematical and Theoretical|
|Publication status||Published - 24 Aug 2001|
- quantum information
- quantum communication