Direct transfer of classical non-separable states into hybrid entangled two photon states

Abstract Hybrid entangled states, having entanglement between different degrees-of-freedom (DoF) of a particle pair, are of great interest for quantum information science and communication protocols. Among different DoFs, the hybrid entangled states encoded with polarization and orbital angular mome...

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Autores principales:	M. V. Jabir, N. Apurv Chaitanya, Manoj Mathew, G. K. Samanta
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/459ef989315242a891e3ca3306eee3cb
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spelling	oai:doaj.org-article:459ef989315242a891e3ca3306eee3cb2021-12-02T16:06:19ZDirect transfer of classical non-separable states into hybrid entangled two photon states10.1038/s41598-017-07318-12045-2322https://doaj.org/article/459ef989315242a891e3ca3306eee3cb2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07318-1https://doaj.org/toc/2045-2322Abstract Hybrid entangled states, having entanglement between different degrees-of-freedom (DoF) of a particle pair, are of great interest for quantum information science and communication protocols. Among different DoFs, the hybrid entangled states encoded with polarization and orbital angular momentum (OAM) allow the generation of qubit-qudit entangled states, macroscopic entanglement with very high quanta of OAM and improvement in angular resolution in remote sensing. Till date, such hybrid entangled states are generated by using a high-fidelity polarization entangled states and subsequent imprinting of chosen amount of OAM using suitable mode converters such as spatial light modulator in complicated experimental schemes. Given that the entangled sources have feeble number of photons, loss of photons during imprinting of OAM using diffractive optical elements limits the use of such hybrid states for practical applications. Here we report, on a simple generic experimental scheme to generate hybrid entangled states in polarization and OAM through direct transfer of classical non-separable states of the pump beam in parametric down conversion process. As a proof of principle, using local non-separable pump states of OAM mode l = 3, we have produced quantum hybrid entangled states with entanglement witness parameter of ~1.25 ± 0.03 violating by 8 standard deviation.M. V. JabirN. Apurv ChaitanyaManoj MathewG. K. SamantaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q M. V. Jabir N. Apurv Chaitanya Manoj Mathew G. K. Samanta Direct transfer of classical non-separable states into hybrid entangled two photon states
description	Abstract Hybrid entangled states, having entanglement between different degrees-of-freedom (DoF) of a particle pair, are of great interest for quantum information science and communication protocols. Among different DoFs, the hybrid entangled states encoded with polarization and orbital angular momentum (OAM) allow the generation of qubit-qudit entangled states, macroscopic entanglement with very high quanta of OAM and improvement in angular resolution in remote sensing. Till date, such hybrid entangled states are generated by using a high-fidelity polarization entangled states and subsequent imprinting of chosen amount of OAM using suitable mode converters such as spatial light modulator in complicated experimental schemes. Given that the entangled sources have feeble number of photons, loss of photons during imprinting of OAM using diffractive optical elements limits the use of such hybrid states for practical applications. Here we report, on a simple generic experimental scheme to generate hybrid entangled states in polarization and OAM through direct transfer of classical non-separable states of the pump beam in parametric down conversion process. As a proof of principle, using local non-separable pump states of OAM mode l = 3, we have produced quantum hybrid entangled states with entanglement witness parameter of ~1.25 ± 0.03 violating by 8 standard deviation.
format	article
author	M. V. Jabir N. Apurv Chaitanya Manoj Mathew G. K. Samanta
author_facet	M. V. Jabir N. Apurv Chaitanya Manoj Mathew G. K. Samanta
author_sort	M. V. Jabir
title	Direct transfer of classical non-separable states into hybrid entangled two photon states
title_short	Direct transfer of classical non-separable states into hybrid entangled two photon states
title_full	Direct transfer of classical non-separable states into hybrid entangled two photon states
title_fullStr	Direct transfer of classical non-separable states into hybrid entangled two photon states
title_full_unstemmed	Direct transfer of classical non-separable states into hybrid entangled two photon states
title_sort	direct transfer of classical non-separable states into hybrid entangled two photon states
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/459ef989315242a891e3ca3306eee3cb
work_keys_str_mv	AT mvjabir directtransferofclassicalnonseparablestatesintohybridentangledtwophotonstates AT napurvchaitanya directtransferofclassicalnonseparablestatesintohybridentangledtwophotonstates AT manojmathew directtransferofclassicalnonseparablestatesintohybridentangledtwophotonstates AT gksamanta directtransferofclassicalnonseparablestatesintohybridentangledtwophotonstates
_version_	1718385019415691264

Direct transfer of classical non-separable states into hybrid entangled two photon states

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