Subwavelength silicon nitride films emit entangled photon pairs through spontaneous four-wave mixing, and film-substrate interference reveals the films' third-order nonlinearity.
Spontaneous photon-pair generation from a dielectric nanoantenna,
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Generation of photon pairs through spontaneous four-wave mixing in subwavelength nonlinear films
Subwavelength silicon nitride films emit entangled photon pairs through spontaneous four-wave mixing, and film-substrate interference reveals the films' third-order nonlinearity.