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dc.contributor.authorSteinlechner, Fabian
dc.contributor.authorGilaberte, Marta
dc.contributor.authorJofre Cruanyes, Marc
dc.contributor.authorScheidl, Thomas
dc.contributor.authorPérez Torres, Juan
dc.contributor.authorPruneri, Valerio
dc.contributor.authorUrsin, Rupert
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2014-11-04T17:47:09Z
dc.date.created2014-09-01
dc.date.issued2014-09-01
dc.identifier.citationSteinlechner, F. [et al.]. Efficient heralding of polarization-entangled photons from type-0 and type-II spontaneous parametric downconversion in periodically poled KTiOPO 4. "Journal of the Optical Society of America B. Optical physics", 01 Setembre 2014, vol. 31, núm. 9, p. 2068-2076.
dc.identifier.issn0740-3224
dc.identifier.urihttp://hdl.handle.net/2117/24554
dc.description.abstractUltrabright sources of entangled photon pairs with high heralding efficiency are an important step in the pursuit of high-bit-rate entanglement-base quantum key distribution, as well as an enabling tool for loss-sensitive quantum optics experiments. Here, we present a robust single-mode fiber-coupled source of polarization-entangled photons around 810 nm with both high brightness and heralding efficiency. Our approach is based on quasi-phase-matched spontaneous parametric downconversion (SPDC) from periodically poled KTiOPO4 in a Sagnac loop configuration. We demonstrate a high degree of two-photon polarization entanglement for single-frequency-pumped type-0 and type-II SPDC, and conduct a conclusive comparison in terms of efficiency and spectral characteristics. In light of applications outside a laboratory environment, we evaluate the feasibility of pumping nonlinear crystals with free-running laser diodes. © 2014 Optical Society of America.
dc.format.extent9 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
dc.subject.lcshQuantum optics
dc.subject.otherEfficiency
dc.subject.otherPolarization
dc.subject.otherQuantum cryptography
dc.subject.otherQuantum optics
dc.subject.otherSingle mode fibers
dc.subject.otherEntangled photon pairs
dc.subject.otherFree-running lasers
dc.subject.otherLaboratory environment
dc.subject.otherPolarization-entangled photons
dc.subject.otherQuasi-phase-matched
dc.subject.otherSpectral characteristics
dc.subject.otherSpontaneous parametric down-conversion
dc.subject.otherTwo-photon polarization
dc.subject.otherPhotons
dc.titleEfficient heralding of polarization-entangled photons from type-0 and type-II spontaneous parametric downconversion in periodically poled KTiOPO 4
dc.typeArticle
dc.subject.lemacÒptica quàntica
dc.contributor.groupUniversitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
dc.identifier.doi10.1364/JOSAB.31.002068
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-31-9-2068
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac15264183
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorSteinlechner, F.; Gilaberte, M.; Jofre, M.; Scheidl, T.; Juan P. Torres; Pruneri, V.; Ursin, R.
local.citation.publicationNameJournal of the Optical Society of America B. Optical physics
local.citation.volume31
local.citation.number9
local.citation.startingPage2068
local.citation.endingPage2076


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