Abstract
The efficiency of a spontaneous parametric down-conversion process can be modified by boundary conditions which can be determined by the characteristics of a pump. We demonstrate that an effective boundary condition can be introduced to spontaneous two-photon emission by making use of a continuous-wave multi-mode pump. This effect results in periodic suppression and enhancement of spontaneous two-photon emission via interference over the pump coherence length.
© 2018 The Author(s)
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