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Tunable entanglement distillation of spatially correlated down-converted photons
Univ Concepcion, Chile.
Univ Concepcion, Chile.
Univ Concepcion, Chile.
Univ Concepcion, Chile.
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 11, p. 13961-13972Article in journal (Refereed) Published
Abstract [en]

We report on a new technique for entanglement distillation of the bipartite continuous variable state of spatially correlated photons generated in the spontaneous parametric down-conversion process ( SPDC), where tunable non-Gaussian operations are implemented and the post-processed entanglement is certified in real-time using a single-photon sensitive electron multiplying CCD (EMCCD) camera. The local operations are performed using non-Gaussian filters modulated into a programmable spatial light modulator and, by using the EMCCD camera for actively recording the probability distributions of the twin-photons, one has fine control of the Schmidt number of the distilled state. We show that even simple non-Gaussian filters can be finely tuned to a similar to 67% net gain of the initial entanglement generated in the SPDC process. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2018. Vol. 26, no 11, p. 13961-13972
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-148649DOI: 10.1364/OE.26.013961ISI: 000433333700024PubMedID: 29877441OAI: oai:DiVA.org:liu-148649DiVA, id: diva2:1219988
Note

Funding Agencies|Fondecyt [11150325, 1160400, 3170400, 1150101]; PAI-Conicyt [79160083]; Millennium Institute for Research in Optics (MIRO); Becas CONICYT

Available from: 2018-06-18 Created: 2018-06-18 Last updated: 2018-07-03

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Xavier, Guilherme B
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