  Weak coherent source (WCS) and spontaneous parametric down converted heralded
single photon pairs have found applications in quantum key distribution (QKD)
and quantum imaging (QI) experiments. Decoy state methods have also been used
to enhance the security for QKD and QI. We study quantum secured imaging with
the decoy state heralded single photon source (HSPS). The HSPSs superior
performance in low photon number regimes makes it an ideal candidate for
integrating quantum key distribution protocols to reduce measurement
uncertainty and ensure secure QI. Furthermore, our results also infer the
influence of the decoy state WCS, due to its higher operating speed than decoy
state HSPS, would be effective in conditions that allow higher mean photon
numbers for quantum secured imaging.
