Multi-copy quantifiers for single-photon states

Abstract Single-photon states are basic resources for hybrid quantum technology with non-Gaussian states of light. Accelerating quantum technology is already able to produce high-quality single-photon states. These states can be used for hybrid quantum information processing, based on a nonclassical...

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Autores principales:	Petr Zapletal, Radim Filip
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4a26341998674a888f4c3dfe1b8dc14c
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spelling	oai:doaj.org-article:4a26341998674a888f4c3dfe1b8dc14c2021-12-02T12:31:58ZMulti-copy quantifiers for single-photon states10.1038/s41598-017-01333-y2045-2322https://doaj.org/article/4a26341998674a888f4c3dfe1b8dc14c2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01333-yhttps://doaj.org/toc/2045-2322Abstract Single-photon states are basic resources for hybrid quantum technology with non-Gaussian states of light. Accelerating quantum technology is already able to produce high-quality single-photon states. These states can be used for hybrid quantum information processing, based on a nonclassical phase-space interference represented by negativity of a Wigner function. Therefore, new quantifiers, capable of evaluating such high-quality single-photon states, are required. We propose and analyze quantifiers which process multiple estimates of single-photon state’s statistics. The quantifiers simulate basic capability of single photons to conditionally bunch into a single mode and form a Fock state. This state exhibits complex nonclassical phase-space interference effects making its Wigner function negative in multiple areas. The quantifiers directly evaluate a presence of the multiple negativities corresponding to the Fock state. We verify applicability of the quantifiers by using them to single-photon states from recent experiments. The quantifiers can be further extended to also test indistinguishability of single-photon states. It allows to verify quantum interference of light from single-photon emitters more sensitively than in the traditional Hong-Ou-Mandel test. Besides quantum optics, the multi-copy quantifiers can be also applied to experiments with atomic memories and mechanical oscillators.Petr ZapletalRadim FilipNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Petr Zapletal Radim Filip Multi-copy quantifiers for single-photon states
description	Abstract Single-photon states are basic resources for hybrid quantum technology with non-Gaussian states of light. Accelerating quantum technology is already able to produce high-quality single-photon states. These states can be used for hybrid quantum information processing, based on a nonclassical phase-space interference represented by negativity of a Wigner function. Therefore, new quantifiers, capable of evaluating such high-quality single-photon states, are required. We propose and analyze quantifiers which process multiple estimates of single-photon state’s statistics. The quantifiers simulate basic capability of single photons to conditionally bunch into a single mode and form a Fock state. This state exhibits complex nonclassical phase-space interference effects making its Wigner function negative in multiple areas. The quantifiers directly evaluate a presence of the multiple negativities corresponding to the Fock state. We verify applicability of the quantifiers by using them to single-photon states from recent experiments. The quantifiers can be further extended to also test indistinguishability of single-photon states. It allows to verify quantum interference of light from single-photon emitters more sensitively than in the traditional Hong-Ou-Mandel test. Besides quantum optics, the multi-copy quantifiers can be also applied to experiments with atomic memories and mechanical oscillators.
format	article
author	Petr Zapletal Radim Filip
author_facet	Petr Zapletal Radim Filip
author_sort	Petr Zapletal
title	Multi-copy quantifiers for single-photon states
title_short	Multi-copy quantifiers for single-photon states
title_full	Multi-copy quantifiers for single-photon states
title_fullStr	Multi-copy quantifiers for single-photon states
title_full_unstemmed	Multi-copy quantifiers for single-photon states
title_sort	multi-copy quantifiers for single-photon states
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4a26341998674a888f4c3dfe1b8dc14c
work_keys_str_mv	AT petrzapletal multicopyquantifiersforsinglephotonstates AT radimfilip multicopyquantifiersforsinglephotonstates
_version_	1718394212916920320

Multi-copy quantifiers for single-photon states

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