Broadband infrared light source by simultaneous parametric down-conversion [PDF]
Scientific Reports, 2021 Spontaneous parametric down-conversion is an essential tool for a quantum light source in the infrared region ranging 2–5 µm for the purpose of material identification, chemical analysis, and gas sensing.
Masayuki Hojo, Koichiro Tanaka
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Classical model of spontaneous parametric down-conversion
Physical Review Research, 2022 We model spontaneous parametric down-conversion (SPDC) as classical difference frequency generation (DFG) of the pump field and a hypothetical stochastic “vacuum” seed field.
Girish Kulkarni +4 more
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X-ray parametric down-conversion reveals EUV-polariton [PDF]
Nature CommunicationsSpontaneous parametric down-conversion (PDC) of photons is a gateway into the quantum realm – thoroughly studied in nonlinear optics and ubiquitously used to generate non-classical states of light.
Dietrich Krebs +7 more
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Observation of frequency-uncorrelated photon pairs generated by counter-propagating spontaneous parametric down-conversion [PDF]
Scientific Reports, 2021 We report the generation of frequency-uncorrelated photon pairs from counter-propagating spontaneous parametric down-conversion in a periodically-poled KTP waveguide.
Yi-Chen Liu +11 more
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Spontaneous parametric down conversion without poling for silicon carbide and lithium niobate photonics [PDF]
Scientific ReportsState-of-the-art photon sources based on spontaneous parametric down-conversion (SPDC) currently rely on artificial structuring of the material nonlinearity to satisfy phase-matching conditions. This technique, known as periodic poling, is available only
Tim F. Weiss +3 more
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Cascaded nonlinear down-conversion in poling-free lithium niobate nanophotonic waveguides [PDF]
Nature CommunicationsWhile cascaded second-order nonlinear processes have revolutionized shorter-wavelength light generation through up-conversion, their potential for longer-wavelength emission via parametric down-conversion remains fundamentally unexplored – constrained by
Congliao Yan +12 more
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Observation of strong nonlinear interactions in parametric down-conversion of X-rays into ultraviolet radiation [PDF]
Nature Communications, 2019 Here, the authors report parametric down-conversion of X-rays into long wavelength radiation in gallium arsenide and lithium niobate crystals, with efficiencies about 4 orders of magnitude stronger than the efficiencies measured in any material studied ...
S. Sofer +8 more
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Spontaneous Parametric Down-Conversion from GaAs Nanowires at Telecom Wavelength [PDF]
EPJ Web of Conferences, 2022 We report on the generation of photon pairs at 1550 nm from free-standing epitaxially grown self-assisted micrometre long GaAs nanowires. The efficiency of the spontaneous parametric down-conversion process has a rate of 320 GHz/Wm normalized to the ...
Saerens Grégoire +12 more
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Joint probability distributions for optical parametric down-conversion [PDF]
Journal of the European Optical Society-Rapid Publications, 2006 We derive multi mode joint generating functions, photon-number distributions, integrated-intensity distributions and related quantities for spontaneous and stimulated parametric down-conversion in relation to experiments.
Peřina Jan, Křepelka Jaromír
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General simulation method for spontaneous parametric down- and parametric up-conversion experiments
SciPost Physics Core, 2023 Spontaneous parametric down-conversion (SPDC) sources are an important technology for quantum sensing and imaging. We demonstrate a general simulation method, based on modeling from first principles, reproducing the spectrally and spatially resolved ...
Felix Riexinger, Mirco Kutas, Björn Haase, Patricia Bickert, Daniel Molter, Michael Bortz, Georg von Freymann
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