Heralding Single Photons using Photon-number-resolving Superconducting Nanowires
Samantha I. Davis, Andrew Mueller, Raju Valivarthi, Nikolai Lauk, Lautaro Narváez, Boris A. Korzh, Andrew D. Beyer, Marco Colangelo, Karl K. Berggren, Matthew D. Shaw, Neil E. Sinclair, M. Spiropulu · Conference on Lasers and Electro-Optics · 2022
We improve a single photon source based on spontaneous parametric down-conversion by heralding one of the output modes using a photon number resolving superconducting nanowire detector. We measure a reduced magnitude of the second order cross correlation of one of the output modes conditioned on detection of a single photon in the other mode.