Deterministic phase measurements exhibiting super-sensitivity and super-resolution
Research output: Research - peer-review › Journal article – Annual report year: 2018
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.
Original language | English |
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Journal | Optica |
Volume | 5 |
Issue number | 1 |
Pages (from-to) | 60-64 |
ISSN | 2334-2536 |
DOIs | |
State | Published - 2018 |
Citations | Web of Science® Times Cited: 1 |
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ID: 143238938