Journal article · Preprint article
Deterministic phase measurements exhibiting super-sensitivity and super-resolution
Phase super-sensitivity is obtained when the sensitivity in a phase measurement goes beyond the quantum shot noise limit, whereas super-resolution is obtained when the interference fringes in an interferometer are narrower than half the input wavelength. Here we show experimentally that these two features can be simultaneously achieved using a relatively simple setup based on Gaussian states and homodyne measurement.
Using 430 photons shared between a coherent and a squeezed vacuum state, we demonstrate a 22-fold improvement in the phase resolution, while we observe a 1.7-fold improvement in the sensitivity. In contrast to previous demonstrations of super-resolution and super-sensitivity, this approach is fully deterministic.
Language: | English |
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Year: | 2018 |
Pages: | 60-64 |
ISSN: | 23342536 |
Types: | Journal article and Preprint article |
DOI: | 10.1364/OPTICA.5.000060 |
ORCIDs: | Gehring, Tobias and Andersen, Ulrik Lund |