|
| related topics |
| {states, state, optimal} |
| {cos, sin, state} |
| {measurement, state, measurements} |
| {key, protocol, security} |
| {information, entropy, channel} |
| {alice, bob, state} |
| {state, phys, rev} |
| {error, code, errors} |
|
Fidelity and the communication of quantum information
Stephen M. Barnett, Claire R. Gilson, Masahide Sasaki
abstract: 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 {\it
classical} information and the fidelity measures the retrieval of {\it quantum}
information. We present the optimal measurement strategies for maximising the
fidelity given a source that encodes information on the symmetric qubit-states.
- oai_identifier:
- oai:arXiv.org:quant-ph/0107024
- categories:
- quant-ph
- comments:
- 11 pages, RevTeX, 3 figures(EPSF)
- doi:
- 10.1088/0305-4470/34/35/303
- arxiv_id:
- quant-ph/0107024
- journal_ref:
- J. Phys. A: Math. Gen. 34(35), 6755 (2001).
- created:
- 2001-07-05
Full article ▸
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