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Journal article · Preprint article

Experimental verification of high spectral entanglement for pulsed waveguided spontaneous parametric down-conversion

By Avenhaus, M.; Chekhova, M. V.; Krivitsky, Leonid1; Leuchs, G.; Silberhorn, C.

From

Department of Physics, Technical University of Denmark1

We study the spectral properties of spontaneous parametric down-conversion (SPDC) in a periodically poled waveguided structure of potassium-titanyl-phosphate (KTP) crystal pumped by ultrashort pulses. Our theoretical analysis reveals a strongly entangled and asymmetric structure of the two-photon spectral amplitude for type-II SPDC.

We confirm these predictions experimentally by measuring single-photon spectra, on one hand, and the dependence of Hong-Ou-Mandel interference visibility on the width of spectral filtering, on the other hand.

Language: English
Publisher: AMER PHYSICAL SOC
Year: 2009
ISBN: 3112402812 , 3879977178 , 9783112402818 and 9783879977178
ISSN: 10502947 , 10941622 and 24699926
Types: Journal article and Preprint article
DOI: 10.1103/PhysRevA.79.043836
Keywords

high-speed optical techniques optical frequency conversion optical pumping optical waveguide filters quantum entanglement quantum optics two-photon spectra

Other keywords

2-PHOTON ENTANGLEMENT DOWNCONVERSION PHOTONS PUMPOptics Physics SPECTROSCOPY optical pumping quant-ph quantum optics

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