Deterministic phase measurements exhibiting super-sensitivity and super-resolution

Clemens Schäfermeier*, Miroslav Ježek, Lars S. Madsen, Tobias Gehring, Ulrik Lund Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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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.
Original languageEnglish
JournalOptica
Volume5
Issue number1
Pages (from-to)60-64
ISSN2334-2536
DOIs
Publication statusPublished - 2018

Cite this

Schäfermeier, Clemens ; Ježek, Miroslav ; Madsen, Lars S. ; Gehring, Tobias ; Andersen, Ulrik Lund. / Deterministic phase measurements exhibiting super-sensitivity and super-resolution. In: Optica. 2018 ; Vol. 5, No. 1. pp. 60-64.
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author = "Clemens Sch{\"a}fermeier and Miroslav Ježek and Madsen, {Lars S.} and Tobias Gehring and Andersen, {Ulrik Lund}",
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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 articleResearchpeer-review

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

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EP - 64

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