Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

Abstract We propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefor...

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Autores principales:	Jino Heo, Seong-Gon Choi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2549f196a9124384a5ea2bbaa26fdbe9
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spelling	oai:doaj.org-article:2549f196a9124384a5ea2bbaa26fdbe92021-12-02T15:52:25ZProcedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states10.1038/s41598-021-89809-w2045-2322https://doaj.org/article/2549f196a9124384a5ea2bbaa26fdbe92021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89809-whttps://doaj.org/toc/2045-2322Abstract We propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefore, we design a procedure employing nonlinear optical gates, which are composed of XKNLs, quantum bus beams, and photon-number-resolving measurements with linear optical devices, to conserve quantum information by encoding quantum information onto four-photon decoherence-free states (single logical qubit information). Based on our analysis in quantifying the affection (photon loss and dephasing) of the decoherence effect, we demonstrate the experimental condition to acquire the reliable procedure of single logical qubit information having the robustness against the decoherence effect.Jino HeoSeong-Gon ChoiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jino Heo Seong-Gon Choi Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
description	Abstract We propose a photonic procedure using cross-Kerr nonlinearities (XKNLs) to encode single logical qubit information onto four-photon decoherence-free states. In quantum information processing, a decoherence-free subspace can secure quantum information against collective decoherence. Therefore, we design a procedure employing nonlinear optical gates, which are composed of XKNLs, quantum bus beams, and photon-number-resolving measurements with linear optical devices, to conserve quantum information by encoding quantum information onto four-photon decoherence-free states (single logical qubit information). Based on our analysis in quantifying the affection (photon loss and dephasing) of the decoherence effect, we demonstrate the experimental condition to acquire the reliable procedure of single logical qubit information having the robustness against the decoherence effect.
format	article
author	Jino Heo Seong-Gon Choi
author_facet	Jino Heo Seong-Gon Choi
author_sort	Jino Heo
title	Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
title_short	Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
title_full	Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
title_fullStr	Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
title_full_unstemmed	Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
title_sort	procedure via cross-kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2549f196a9124384a5ea2bbaa26fdbe9
work_keys_str_mv	AT jinoheo procedureviacrosskerrnonlinearitiesforencodingsinglelogicalqubitinformationontofourphotondecoherencefreestates AT seonggonchoi procedureviacrosskerrnonlinearitiesforencodingsinglelogicalqubitinformationontofourphotondecoherencefreestates
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Procedure via cross-Kerr nonlinearities for encoding single logical qubit information onto four-photon decoherence-free states

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