Abstract
We report on the realization of a tunable source of correlated photon pairs compatible with telecommunication networks and quantum memories involving dielectric crystals doped by Nd3+ ions. The source is based on spontaneous parametric down-conversion in a 25 mm periodically poled lithium niobate crystal pumped by 532 nm cw laser. Spectral and correlation characteristics of the corresponding heralded single-photon source compatible with quantum memories are presented.
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