Data di Pubblicazione:
2009
Citazione:
Enhancement of parameter estimation by Kerr interaction / M. G. Genoni, C. Invernizzi, M. Paris. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 80:3(2009), pp. 033842.033842.1-033842.033842.5. [10.1103/PhysRevA.80.033842]
Abstract:
We address quantum estimation of displacement and squeezing parameters by the class of probes made of
Gaussian states undergoing Kerr interaction. If we fix the overall energy available to the probe, without posing
any constraint on the available Gaussian squeezing, then Gaussian squeezing represents the optimal resource
for parameter estimation. On the other hand, in the more realistic case where the amount of Gaussian squeezing
is fixed, or even absent, then Kerr interaction turns out to be useful to improve estimation, especially for probe
states with large amplitude. Our results indicate that precision achievable with current technology Gaussian
squeezing may be attained and surpassed for realistic values of the Kerr coupling.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
M.G. Genoni, C. Invernizzi, M. Paris
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