|
| related topics |
| {measurement, state, measurements} |
| {theory, mechanics, state} |
| {state, states, coherent} |
| {photon, photons, single} |
| {time, decoherence, evolution} |
| {group, space, representation} |
| {light, field, probe} |
| {particle, mechanics, theory} |
| {operator, operators, space} |
| {vol, operators, histories} |
| {information, entropy, channel} |
| {time, systems, information} |
| {cos, sin, state} |
|
Correlations of measurement information and noise in quantum
measurements with finite resolution
Holger F. Hofmann, Takayoshi Kobayashi, Akira Furusawa
abstract: The original purpose of measurements is to provide us with information about
a previously unknown physical property of the system observed. In the Hilbert
space formalism of quantum mechanics, this physical meaning of measurement
information is not immediately apparent. In order to study the relationship
between the Hilbert space coherence of the quantum state and the measurement
information obtained in the laboratory, we introduce a generalized measurement
postulate for finite resolution measurements. With this measurement model,
correlations between non-commuting observables can be investigated. These
experimentally accessible correlations reveal nonclassical features in their
dependence on the operator ordering, reflecting the particular measurement
context by which they are determined.
- oai_identifier:
- oai:arXiv.org:quant-ph/0003067
- categories:
- quant-ph math.QA
- comments:
- 14 pages including 4 figures, contribution to the proceedings of the
RIMS symposium on analytical studies of Quantum Information and Related
Fields, held January 2000 in Kyoto
- arxiv_id:
- quant-ph/0003067
- created:
- 2000-03-16
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