Back Conversió descendent paramètrica espontània Catalan Parametrische Fluoreszenz German Conversión paramétrica descendente espontánea Spanish Convertisseur bas French Conversione parametrica Italian 自発的パラメトリック下方変換 Japanese Fluorescencja parametryczna Polish Спонтанное параметрическое рассеяние Russian Спонтанне параметричне розсіяння Ukrainian 自發參量下轉換 Chinese
Spontaneous parametric down-conversion (also known as SPDC, parametric fluorescence or parametric scattering) is a nonlinear instant optical process that converts one photon of higher energy (namely, a pump photon) into a pair of photons (namely, signal and idler photons) of lower energy, in accordance with the laws of energy conservation and momentum conservation. It is an important process in quantum optics, for the generation of entangled photon pairs and of single photons.
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