Micro/nano fiber based source of heralded single photons at the telecom band

We experimentally demonstrate a heralded single photon source at 1290 nm by exploiting the spontaneous four wave mixing in a taper-drawn micro/nano-fiber (MNF). Because the frequency detuning between the pump and heralded single photons is ~58 THz, the contamination by Raman scattering is significan