Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot

Abstract We represent an optical scheme using cross-Kerr nonlinearities (XKNLs) and quantum dot (QD) within a single-sided optical cavity (QD-cavity system) to generate three-photon entangled W state containing entanglement against loss of one photon of them. To generate W state (three-photon) with...

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Autores principales:	Jino Heo, Changho Hong, Seong-Gon Choi, Jong-Phil Hong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a1e9b4fbdd194c0c95ca7d4d1b1e9b31
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spelling	oai:doaj.org-article:a1e9b4fbdd194c0c95ca7d4d1b1e9b312021-12-02T15:08:30ZScheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot10.1038/s41598-019-46231-72045-2322https://doaj.org/article/a1e9b4fbdd194c0c95ca7d4d1b1e9b312019-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-46231-7https://doaj.org/toc/2045-2322Abstract We represent an optical scheme using cross-Kerr nonlinearities (XKNLs) and quantum dot (QD) within a single-sided optical cavity (QD-cavity system) to generate three-photon entangled W state containing entanglement against loss of one photon of them. To generate W state (three-photon) with robust entanglement against loss of one photon, we utilize effects of optical nonlinearities in XKNLs (as quantum controlled operations) and QD-cavity system (as a parity operation) with linearly optical devices. In our scheme, the nonlinear (XKNL) gate consists of weak XKNLs, quantum bus beams, and photon-number-resolving measurement to realize controlled-unitary gate between two photons while another nonlinear (QD) gate employs interactions of photons and an electron of QD confined within a single-sided optical cavity for implementation of parity gate. Subsequently, for the efficiency and experimental feasibility of our scheme generating W state, we analyze the immunity of the controlled-unitary gate using XKNLs against decoherence effect and reliable performance of parity gate using QD-cavity system.Jino HeoChangho HongSeong-Gon ChoiJong-Phil HongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-15 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jino Heo Changho Hong Seong-Gon Choi Jong-Phil Hong Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
description	Abstract We represent an optical scheme using cross-Kerr nonlinearities (XKNLs) and quantum dot (QD) within a single-sided optical cavity (QD-cavity system) to generate three-photon entangled W state containing entanglement against loss of one photon of them. To generate W state (three-photon) with robust entanglement against loss of one photon, we utilize effects of optical nonlinearities in XKNLs (as quantum controlled operations) and QD-cavity system (as a parity operation) with linearly optical devices. In our scheme, the nonlinear (XKNL) gate consists of weak XKNLs, quantum bus beams, and photon-number-resolving measurement to realize controlled-unitary gate between two photons while another nonlinear (QD) gate employs interactions of photons and an electron of QD confined within a single-sided optical cavity for implementation of parity gate. Subsequently, for the efficiency and experimental feasibility of our scheme generating W state, we analyze the immunity of the controlled-unitary gate using XKNLs against decoherence effect and reliable performance of parity gate using QD-cavity system.
format	article
author	Jino Heo Changho Hong Seong-Gon Choi Jong-Phil Hong
author_facet	Jino Heo Changho Hong Seong-Gon Choi Jong-Phil Hong
author_sort	Jino Heo
title	Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
title_short	Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
title_full	Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
title_fullStr	Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
title_full_unstemmed	Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot
title_sort	scheme for generation of three-photon entangled w state assisted by cross-kerr nonlinearity and quantum dot
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/a1e9b4fbdd194c0c95ca7d4d1b1e9b31
work_keys_str_mv	AT jinoheo schemeforgenerationofthreephotonentangledwstateassistedbycrosskerrnonlinearityandquantumdot AT changhohong schemeforgenerationofthreephotonentangledwstateassistedbycrosskerrnonlinearityandquantumdot AT seonggonchoi schemeforgenerationofthreephotonentangledwstateassistedbycrosskerrnonlinearityandquantumdot AT jongphilhong schemeforgenerationofthreephotonentangledwstateassistedbycrosskerrnonlinearityandquantumdot
_version_	1718388141141786624

Scheme for generation of three-photon entangled W state assisted by cross-Kerr nonlinearity and quantum dot

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