|
| related topics |
| {information, entropy, channel} |
| {measurement, state, measurements} |
| {time, decoherence, evolution} |
| {entanglement, phys, rev} |
| {states, state, optimal} |
| {qubit, qubits, gate} |
| {bell, inequality, local} |
|
Accessible information in quantum measurement
N. J. Cerf, C. Adami
abstract: The amount of information that can be accessed via measurement of a quantum
system prepared in different states is limited by the Kholevo bound. We present
a simple proof of this theorem and its extension to sequential measurements
based on the properties of quantum conditional and mutual entropies. The proof
relies on a minimal physical model of the measurement which does not assume
environmental decoherence, and has an intuitive diagrammatic representation.
- oai_identifier:
- oai:arXiv.org:quant-ph/9611032
- categories:
- quant-ph
- comments:
- 4 pages RevTeX with psfig, 3 figures
- arxiv_id:
- quant-ph/9611032
- report_no:
- KRL MAP-207
- created:
- 1996-11-19
Full article ▸
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