|
| related topics |
| {state, states, coherent} |
| {light, field, probe} |
| {measurement, state, measurements} |
| {phase, path, phys} |
| {photon, photons, single} |
| {state, algorithm, problem} |
| {cos, sin, state} |
| {error, code, errors} |
|
A two-step optimized measurement for the phase-shift
A. V. Chizhov, V. De Renzi, M. G. A. Paris
abstract: A two-step detection strategy is suggested for the precise measurement of the
optical phase-shift. In the first step an unsharp, however, unbiased joint
measurement of the phase and photon number is performed by heterodyning the
signal field. Information coming from this step is then used for suitable
squeezing of the probe mode to obtain a sharp phase distribution. Application
to squeezed states leads to a phase sensitivity scaling as $\Delta\phi\simeq
N^{-1}$ relative to the total number of photons impinged into the apparatus.
Numerical simulations of the whole detection strategy are also also presented.
- oai_identifier:
- oai:arXiv.org:quant-ph/9801067
- categories:
- quant-ph
- comments:
- Latex 5 figs -- More info at http://enterprise.pv.infn.it/~paris
- doi:
- 10.1016/S0375-9601(97)00852-9
- arxiv_id:
- quant-ph/9801067
- journal_ref:
- Phys.Lett. A237 (1998) 201
- created:
- 1998-01-29
Full article ▸
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