A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs

Abstract We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs. In our approach we tailor the phase-matching of a periodically poled KTP crystal such that two downconversion processes take place simultaneously. Relying on this effect, our source emits entangle...

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Autores principales:	Fabian Laudenbach, Sebastian Kalista, Michael Hentschel, Philip Walther, Hannes Hübel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1fd452d3baf442bdb3aba1b69a1ff7f0
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spelling	oai:doaj.org-article:1fd452d3baf442bdb3aba1b69a1ff7f02021-12-02T12:31:59ZA novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs10.1038/s41598-017-07781-w2045-2322https://doaj.org/article/1fd452d3baf442bdb3aba1b69a1ff7f02017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07781-whttps://doaj.org/toc/2045-2322Abstract We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs. In our approach we tailor the phase-matching of a periodically poled KTP crystal such that two downconversion processes take place simultaneously. Relying on this effect, our source emits entangled bipartite photon states, emerging intrinsically from a single, unidirectionally pumped crystal with uniform poling period. Its property of being maximally compact and luminous at the same time makes our source unique compared to existing photon-entanglement sources and is therefore of high practical significance in quantum information experiments.Fabian LaudenbachSebastian KalistaMichael HentschelPhilip WaltherHannes HübelNature 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 Fabian Laudenbach Sebastian Kalista Michael Hentschel Philip Walther Hannes Hübel A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
description	Abstract We demonstrate a new generation mechanism for polarisation- and colour-entangled photon pairs. In our approach we tailor the phase-matching of a periodically poled KTP crystal such that two downconversion processes take place simultaneously. Relying on this effect, our source emits entangled bipartite photon states, emerging intrinsically from a single, unidirectionally pumped crystal with uniform poling period. Its property of being maximally compact and luminous at the same time makes our source unique compared to existing photon-entanglement sources and is therefore of high practical significance in quantum information experiments.
format	article
author	Fabian Laudenbach Sebastian Kalista Michael Hentschel Philip Walther Hannes Hübel
author_facet	Fabian Laudenbach Sebastian Kalista Michael Hentschel Philip Walther Hannes Hübel
author_sort	Fabian Laudenbach
title	A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
title_short	A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
title_full	A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
title_fullStr	A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
title_full_unstemmed	A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
title_sort	novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/1fd452d3baf442bdb3aba1b69a1ff7f0
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A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs

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