Lost photon enhances superresolution

A. B. Mikhalychev; P. I. Novik; I. L. Karuseichyk; D. A. Lyakhov; Dominik L. Michels; D. S. Mogilevtsev

doi:10.1038/s41534-021-00465-4

Lost photon enhances superresolution

A. B. Mikhalychev, P. I. Novik, I. L. Karuseichyk, D. A. Lyakhov, Dominik L. Michels, D. S. Mogilevtsev

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Quantum imaging can beat classical resolution limits, imposed by the diffraction of light. In particular, it is known that one can reduce the image blurring and increase the achievable resolution by illuminating an object by entangled light and measuring coincidences of photons. If an n-photon entangled state is used and the nth-order correlation function is measured, the point-spread function (PSF) effectively becomes n−−√ times narrower relatively to classical coherent imaging. Quite surprisingly, measuring n-photon correlations is not the best choice if an n-photon entangled state is available. We show that for measuring (n − 1)-photon coincidences (thus, ignoring one of the available photons), PSF can be made even narrower. This observation paves a way for a strong conditional resolution enhancement by registering one of the photons outside the imaging area. We analyze the conditions necessary for the resolution increase and propose a practical scheme, suitable for observation and exploitation of the effect.

Original language	English (US)
Journal	npj Quantum Information
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41534-021-00465-4
State	Published - Aug 9 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-08-11
Acknowledgements: All the authors acknowledge financial support from the King Abdullah University of Science and Technology (grant 4264.01), A.B.M., I.L.K., and D.S.M. also acknowledge support from the EU Flagship on Quantum Technologies, project PhoG (820365).

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https://repository.kaust.edu.sa/bitstream/10754/667743/3/s41534-021-00465-4.pdf

Cite this

@article{d501d811c047460baf1f3678e480c239,

title = "Lost photon enhances superresolution",

abstract = "Quantum imaging can beat classical resolution limits, imposed by the diffraction of light. In particular, it is known that one can reduce the image blurring and increase the achievable resolution by illuminating an object by entangled light and measuring coincidences of photons. If an n-photon entangled state is used and the nth-order correlation function is measured, the point-spread function (PSF) effectively becomes n−−√ times narrower relatively to classical coherent imaging. Quite surprisingly, measuring n-photon correlations is not the best choice if an n-photon entangled state is available. We show that for measuring (n − 1)-photon coincidences (thus, ignoring one of the available photons), PSF can be made even narrower. This observation paves a way for a strong conditional resolution enhancement by registering one of the photons outside the imaging area. We analyze the conditions necessary for the resolution increase and propose a practical scheme, suitable for observation and exploitation of the effect.",

author = "Mikhalychev, {A. B.} and Novik, {P. I.} and Karuseichyk, {I. L.} and Lyakhov, {D. A.} and Michels, {Dominik L.} and Mogilevtsev, {D. S.}",

note = "KAUST Repository Item: Exported on 2021-08-11 Acknowledgements: All the authors acknowledge financial support from the King Abdullah University of Science and Technology (grant 4264.01), A.B.M., I.L.K., and D.S.M. also acknowledge support from the EU Flagship on Quantum Technologies, project PhoG (820365).",

year = "2021",

month = aug,

day = "9",

doi = "10.1038/s41534-021-00465-4",

language = "English (US)",

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T1 - Lost photon enhances superresolution

AU - Mikhalychev, A. B.

AU - Novik, P. I.

AU - Karuseichyk, I. L.

AU - Lyakhov, D. A.

AU - Michels, Dominik L.

AU - Mogilevtsev, D. S.

N1 - KAUST Repository Item: Exported on 2021-08-11 Acknowledgements: All the authors acknowledge financial support from the King Abdullah University of Science and Technology (grant 4264.01), A.B.M., I.L.K., and D.S.M. also acknowledge support from the EU Flagship on Quantum Technologies, project PhoG (820365).

PY - 2021/8/9

Y1 - 2021/8/9

N2 - Quantum imaging can beat classical resolution limits, imposed by the diffraction of light. In particular, it is known that one can reduce the image blurring and increase the achievable resolution by illuminating an object by entangled light and measuring coincidences of photons. If an n-photon entangled state is used and the nth-order correlation function is measured, the point-spread function (PSF) effectively becomes n−−√ times narrower relatively to classical coherent imaging. Quite surprisingly, measuring n-photon correlations is not the best choice if an n-photon entangled state is available. We show that for measuring (n − 1)-photon coincidences (thus, ignoring one of the available photons), PSF can be made even narrower. This observation paves a way for a strong conditional resolution enhancement by registering one of the photons outside the imaging area. We analyze the conditions necessary for the resolution increase and propose a practical scheme, suitable for observation and exploitation of the effect.

AB - Quantum imaging can beat classical resolution limits, imposed by the diffraction of light. In particular, it is known that one can reduce the image blurring and increase the achievable resolution by illuminating an object by entangled light and measuring coincidences of photons. If an n-photon entangled state is used and the nth-order correlation function is measured, the point-spread function (PSF) effectively becomes n−−√ times narrower relatively to classical coherent imaging. Quite surprisingly, measuring n-photon correlations is not the best choice if an n-photon entangled state is available. We show that for measuring (n − 1)-photon coincidences (thus, ignoring one of the available photons), PSF can be made even narrower. This observation paves a way for a strong conditional resolution enhancement by registering one of the photons outside the imaging area. We analyze the conditions necessary for the resolution increase and propose a practical scheme, suitable for observation and exploitation of the effect.

UR - http://hdl.handle.net/10754/667743

UR - https://www.nature.com/articles/s41534-021-00465-4

U2 - 10.1038/s41534-021-00465-4

DO - 10.1038/s41534-021-00465-4

M3 - Article

SN - 2056-6387

VL - 7

JO - npj Quantum Information

JF - npj Quantum Information

IS - 1

ER -

Lost photon enhances superresolution

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