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
doaj +3 more sources
Cryogenic integrated spontaneous parametric down-conversion
Optica, 2022 Scalable quantum photonics relies on interfacing many optical components under mutually compatible operating conditions. To that end, we demonstrate that spontaneous parametric down-conversion (SPDC) in nonlinear waveguides, a standard technology for generating entangled photon pairs, squeezed states, and heralded single photons, is fully compatible ...
Nina Amelie Lange +6 more
openaire +3 more sources
Tuning curve of type-0 spontaneous parametric down-conversion [PDF]
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC, 2013 We study the tuning curve of entangled photons generated by type-0 spontaneous parametric down-conversion in a periodically poled potassium titanyl phosphate crystal. We demonstrate the X-shaped spatiotemporal structure of the spectrum by means of measurements and numerical simulations.
Lerch, Stefan +4 more
core +6 more sources
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
doaj +4 more sources
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
doaj +2 more sources
Spontaneous Parametric Down-Conversion
, 2022 Calculation of number of photon pairs produced by type-I degenerate Spontaneous Parametric Down-Conversion inside a BBO crystal.
Otero Casal, Pedro
core +4 more sources
EPJ Web of Conferences, 2015 . We discuss the possibilities of controlling the spectrum of correlated photons generated via spontaneous parametric down-conversion by using external homogeneous electric field acting on the nonlinear crystal.
Akatiev D.O., Kalachev A.A.
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Towards spontaneous parametric down conversion from monolayer MoS2 [PDF]
Scientific Reports, 2018 AbstractWe present a detailed study of the second order nonlinearity of 2D (mono-atomic layer) dichalcogenide MoS2, both in the visible and in the IR regime, and test its potential for spontaneous parametric down-conversion (SPDC), the amplification of vacuum fluctuations mediated by optical nonlinearity.
Dinparasti Saleh, Hatef +6 more
openaire +6 more sources
Heralded single-photon states generated via spontaneous parametric down-conversion with an orbital angular momentum controlled by the pump field [PDF]
EPJ Web of Conferences, 2019 Conditional preparation of single-photon states in the process of spontaneous parametric down-conversion with an orbital angular momentum controlled by the pump field is studied.
Turaykhanov D.A. +4 more
doaj +4 more sources
Quality of polarization entanglement in spontaneous parametric down conversion [PDF]
EPJ Web of Conferences, 2017 We experimentally demonstrated a high degree of polarization entanglement known as entanglement visibility through spontaneous parametric down conversion process pumped by a femtosecond laser.
Ali N +3 more
doaj +4 more sources