Abstract
Generation of correlated photon pairs by spontaneous parametric four-wave mixing (FWM) in photonic crystal fibres (PCF) opens the way for many applications, particularly for fibre-based quantum communication devices. In degenerate FWM, two pump photons at frequency ωp are annihilated to produce simultaneously a signal photon at ωs and an idler photon at ωi, such as ωs + ωi = 2ωp (energy conservation). This process occurs with high efficiency only if the phase-matching condition (i. e. momentum conservation) is satisfied [1].
© 2013 IEEE
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