Figure 2: Normalized HOM noise.

(a) Δq(τ) at D=1 for outer (orange points) and inner (black points) channel partitioning. Error bars on a and b equal the s.e. of the mean reflecting the statistical dispersion of points. (b) Δq(τ) at D≈0.3 for outer (orange points) and inner (black points) channel partitioning. Encircled c and d refer to the sketches on c and d. The black and orange dashed lines on both the panels represent the fits of the dips using the following exponential dependence: . The extracted values at D=1 are γ=0.73 (both for outer and inner channels) and τ_w=40 ps (inner channel) and τ_w=80 ps (outer channel). At D≈0.3, we have γ=0.41 and τ_w=120 ps (outer channel) and γ=0.31 and τ_w=83 ps (inner channel). (c) Sketch of current pulses synchronization at τ=0 for the outer and inner channel partitioning. The outer channels are represented as orange lines, the inner as black lines. Negative (positive) charge pulses are represented by blue (red) colours. Pulses colliding synchronously are emphasized by red circles. (d) Sketch of inner and outer channel current pulses when the time delay between the sources is τ=τ_s. The inner channels (black lines) are partitioned while the outer ones (orange dashed lines) are not.