La rivista scientifica internazionale PlosBiology ha recentemente pubblicato uno studio sistematico dedicato ai ricercatori scientifici più citati al mondo, basato sui dati disponibili nel database per la ricerca scientifica mondiale 'Scopus'.

Optical parametric amplification is a second-order nonlinear process whereby an optical signal is amplified by a pump via the generation of an idler field. This mechanism is inherently related to spontaneous parametric down-conversion, which currently constitutes the building block for entangled photon pair generation, a process that is exploited in modern quantum technologies.