Figure 2: Two- and four-photon interference observed under different detection schemes.
From: Observation of detection-dependent multi-photon coherence times
The detection schemes used are (2,0)-detection in a, (1,1)-detection in b, (4,0)-detection in c and (3,1)-detection in d. Solid circles are experimental data, and solid lines are the best fits to the data using the fitting functions from our theoretical model, see equation 2. Error bars represent one s.d. from Poissonian counting statistics. The (3,1)-detection signal exhibits a significant width reduction with respect to the (4,0)-detection signal.
