Deterministic phase measurements exhibiting super-sensitivity and super-resolution

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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Deterministic phase measurements exhibiting super-sensitivity and super-resolution. / Schäfermeier, Clemens; Ježek, Miroslav; Madsen, Lars S.; Gehring, Tobias; Andersen, Ulrik Lund.

In: Optica, Vol. 5, No. 1, 2018, p. 60-64.

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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@article{b321784a651c4622bc4a822faf2b91c2,
title = "Deterministic phase measurements exhibiting super-sensitivity and super-resolution",
abstract = "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.",
author = "Clemens Sch{\"a}fermeier and Miroslav Ježek and Madsen, {Lars S.} and Tobias Gehring and Andersen, {Ulrik Lund}",
year = "2018",
doi = "10.1364/OPTICA.5.000060",
language = "English",
volume = "5",
pages = "60--64",
journal = "Optica",
issn = "2334-2536",
publisher = "The Optical Society (OSA)",
number = "1",

}

RIS

TY - JOUR

T1 - Deterministic phase measurements exhibiting super-sensitivity and super-resolution

AU - Schäfermeier, Clemens

AU - Ježek, Miroslav

AU - Madsen, Lars S.

AU - Gehring, Tobias

AU - Andersen, Ulrik Lund

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

U2 - 10.1364/OPTICA.5.000060

DO - 10.1364/OPTICA.5.000060

M3 - Journal article

VL - 5

SP - 60

EP - 64

JO - Optica

JF - Optica

SN - 2334-2536

IS - 1

ER -