|
| related topics |
| {states, state, optimal} |
| {phase, path, phys} |
| {state, states, coherent} |
| {operator, operators, space} |
| {equation, function, exp} |
| {information, entropy, channel} |
| {algorithm, log, probability} |
| {photon, photons, single} |
| {cos, sin, state} |
| {state, algorithm, problem} |
| {measurement, state, measurements} |
|
On the general problem of quantum phase estimation
G. M. D'Ariano, C. Macchiavello, M. F. Sacchi
abstract: The problem of estimating a generic phase-shift experienced by a quantum
state is addressed for a generally degenerate phase shift operator. The optimal
positive operator-valued measure is derived along with the optimal input state.
Two relevant examples are analyzed: i) a multi-mode phase shift operator for
multipath interferometry; ii) the two mode heterodyne phase detection.
- oai_identifier:
- oai:arXiv.org:quant-ph/9812034
- categories:
- quant-ph
- comments:
- 11 pages. Elsart package used
- doi:
- 10.1016/S0375-9601(98)00702-6
- arxiv_id:
- quant-ph/9812034
- journal_ref:
- Phys.Lett. A248 (1998) 103
- created:
- 1998-12-15
Full article ▸
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