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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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APL Photonics, 2018 We study a calibration scheme for terahertz wave nonlinear-optical detectors based on spontaneous parametric down-conversion. Contrary to the usual low wavelength pump in the green, we report here on the observation of spontaneous parametric down ...
Vladimir V. Kornienko +4 more
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Frontiers in Physics, 2023 Entangled photons are important for testing foundations of quantum physics and are at the heart of quantum technology. Integrated photonics has overwhelming dominance in terms of density and performance, making it a promise route for scalable quantum ...
Bin Niu +15 more
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Efficient Polarization‐Entangled Photon‐Pair Generation by a Fiber‐In‐Line van der Waals Material [PDF]
Advanced ScienceThe recent emergence of van der Waals (vdW) materials with exceptional optical nonlinearity has driven advances in next‐generation nonlinear photonic devices beyond classical optics.
Jungseok Choi +11 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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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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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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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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Towards Measuring Terahertz Photon Statistics by a Superconducting Bolometer
Sensors, 2021 Statistical distributions of the analog readings of an antenna-coupled THz superconducting bolometer were measured and analyzed under a special type of irradiation by low-energy fluxes of THz photons with Poisson photon statistics and controllable mean ...
Pavel Prudkovskii +3 more
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