Fig. 2
From: Multiphoton quantum-state engineering using conditional measurements

Joint photon number distributions for photon-subtracted TMSVS. a–d The first row shows the experimental joint photon number distributions for the simultaneous subtraction of zero (l = 0), one (l = 1), two (l = 2), and three (l = 3) photons. e–h The bottom row shows the theoretical predictions obtained by evaluating Eq. (1)