About: Spatio-spectral characteristics of parametric down-conversion in waveguide arrays

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	High dimensional quantum states are of fundamental interest for quantum information processing. They give access to large Hilbert spaces and, in turn, enable the encoding of quantum information on multiple modes. One method to create such quantum states is parametric down-conversion (PDC) in waveguide arrays (WGAs) which allows for the creation of highly entangled photon pairs in controlled, easily accessible spatial modes, with unique spectral properties. In this paper we examine both theoretically and experimentally the PDC process in a lithium niobate WGA. We measure the spatial and spectral properties of the emitted photon pairs, revealing correlations between spectral and spatial degrees of freedom of the created photons. Our measurements show that, in contrast to prior theoretical approaches, spectrally dependent coupling effects have to be taken into account in the theory of PDC in WGAs. To interpret the results, we developed a theoretical model specifically taking into account spectrally dependent coupling effects, which further enables us to explore the capabilities and limitations for engineering the spatial correlations of the generated quantum states. High dimensional quantum states are of fundamental interest for quantum information processing. They give access to large Hilbert spaces and, in turn, enable the encoding of quantum information on multiple modes. One method to create such quantum states is parametric down-conversion (PDC) in waveguide arrays (WGAs) which allows for the creation of highly entangled photon pairs in controlled, easily accessible spatial modes, with unique spectral properties. In this paper we examine both theoretically and experimentally the PDC process in a lithium niobate WGA. We measure the spatial and spectral properties of the emitted photon pairs, revealing correlations between spectral and spatial degrees of freedom of the created photons. Our measurements show that, in contrast to prior theoretical approaches, spectrally dependent coupling effects have to be taken into account in the theory of PDC in WGAs. To interpret the results, we developed a theoretical model specifically taking into account spectrally dependent coupling effects, which further enables us to explore the capabilities and limitations for engineering the spatial correlations of the generated quantum states. (en)
Title	Spatio-spectral characteristics of parametric down-conversion in waveguide arrays Spatio-spectral characteristics of parametric down-conversion in waveguide arrays (en)
skos:prefLabel	Spatio-spectral characteristics of parametric down-conversion in waveguide arrays Spatio-spectral characteristics of parametric down-conversion in waveguide arrays (en)
skos:notation	RIV/68407700:21340/13:00210222!RIV14-MSM-21340___
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(GA13-33906S), Z(MSM6840770039)
http://linked.open...iv/cisloPeriodika	August
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Jex, Igor Gábris, Aurél Hamilton, Craig
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta jaderná a fyzikálně inženýrská
http://linked.open...dnocenehoVysledku	106811
http://linked.open...ai/riv/idVysledku	RIV/68407700:21340/13:00210222
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ENTANGLED PHOTON PAIRS; LITHIUM-NIOBATE; DIRECTIONAL-COUPLERS; INTERFERENCE; INFORMATION; GENERATION; SOLITONS; OPTICS; PUMP (en)
http://linked.open.../riv/klicoveSlovo	INFORMATION ENTANGLED PHOTON PAIRS INTERFERENCE DIRECTIONAL-COUPLERS LITHIUM-NIOBATE PUMP SOLITONS GENERATION OPTICS
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[C4B21BD37490]
http://linked.open...i/riv/nazevZdroje	New Journal of Physics
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Harnessing the Power of Quantum Walks
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	15
http://linked.open...iv/tvurceVysledku	Jex, Igor Gábris, Aurél Schreiber, A. Silberhorn, C. Hamilton, Craig Laiho, K. Christ, A. Katzschmann, F. Kruse, R. Wilhelm, S.
http://linked.open...ain/vavai/riv/wos	000323480500001
http://linked.open...n/vavai/riv/zamer	Matematické, počítačové a experimentální metody ve fyzice
issn	1367-2630
number of pages	24 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1367-2630/15/8/083046
http://localhost/t...ganizacniJednotka	21340

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