Probing Number-Correlated States of up to 50 Photons
Georg Harder, Tim J. Bartley, Adriana E. Lita, Sae Woo Nam, Thomas Gerrits, Christine Silberhorn · 2015
Using spontaneous parametric down-conversion in ppKTP waveguides, we probe photon-number correlated states of up to 50 photons with a Klyshko efficiency of >60%, in a single mode characterised by an unheralded marginal g(2)(0)=1.87±0.05.