Frequency-multiplexed single-photon sources using electro-optic frequency translation

Summary form only given. Here we demonstrate a novel frequency-multiplexed scheme in which the number of physical components is independent of the number of heralded sources to be combined. In particular, we use one nonlinear interaction, one heralding wavelength-resolving detector, and one electro-optic phase modulator (Fig. 1a). A pulsed spontaneous PDC source generates frequency-correlated photon pairs (Fig. 1b). We use a time-of-flight singlephoton spectrometer [4] to measure a heralding photon with 0.09 nm resolution. Feed-forward control with an electro-optic serrodyne modulator [5] shifts the heralded photon to the desired output frequency (Fig. 1c).