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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2017-08-01
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Series: | Scientific Reports |
Online Access: | https://doi.org/10.1038/s41598-017-07781-w |
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doaj-1fd452d3baf442bdb3aba1b69a1ff7f02020-12-08T01:03:51ZengNature Publishing GroupScientific Reports2045-23222017-08-01711910.1038/s41598-017-07781-wA novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairsFabian Laudenbach0Sebastian Kalista1Michael Hentschel2Philip Walther3Hannes Hübel4Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbHSecurity & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbHSecurity & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbHQuantum Optics, Quantum Nanophysics & Quantum Information, Faculty of Physics, University of ViennaSecurity & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbHAbstract 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.https://doi.org/10.1038/s41598-017-07781-w |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fabian Laudenbach Sebastian Kalista Michael Hentschel Philip Walther Hannes Hübel |
spellingShingle |
Fabian Laudenbach Sebastian Kalista Michael Hentschel Philip Walther Hannes Hübel A novel single-crystal & single-pass source for polarisation- and colour-entangled photon pairs Scientific Reports |
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 Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2017-08-01 |
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. |
url |
https://doi.org/10.1038/s41598-017-07781-w |
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