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

Avenhaus, Malte; Chekhova, Maria V.; Krivitsky, Leonid A.; Leuchs, Gerd; Silberhorn, Christine

doi:10.1103/PhysRevA.79.043836

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

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/persons/resource/persons201002

Avenhaus, Malte
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Chekhova, Maria V.
Quantum Radiation, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Optical Technologies, Technology Development and Service Units, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs, Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons201196

Silberhorn, Christine
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Zitation

Avenhaus, M., Chekhova, M. V., Krivitsky, L. A., Leuchs, G., & Silberhorn, C. (2009). Experimental verification of high spectral entanglement for pulsed waveguided spontaneous parametric down-conversion. PHYSICAL REVIEW A, 79(4): 043836. doi:10.1103/PhysRevA.79.043836.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-6BFF-6

Zusammenfassung

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.