Fig. 2: Engineering unidirectional scattering.
From: Unidirectional scattering with spatial homogeneity using correlated photonic time disorder
a, Structure factors SFW(ω) (top) and SBW(ω) (bottom) with varying design parameters S0 and S2ω, respectively. The design parameters are represented by gradual colours (A, S0 = 0; B, S0 ≈ 2.95; C, S2ω = 0; D, S2ω ≈ 1.86). b, An example of the Δε(t) realizations (grey areas) and the corresponding scattering intensity |ψsca(t)|2 (solid lines) for the A, B and D states in a. t0 = 2π/ω0. c,d, Comparison of the scattering powers from the structure factor prediction (solid lines) and rigorous TD-TMM analysis (error bars) for each ensemble with different design parameters S0 and S2ω in a and b, showing suppression of the backward (c) and forward (d) scattering. The top and bottom figures represent the forward and backward power, respectively, after t > 20t0. Filled circles and error bars denote the ensemble average from the TD-TMM results and the interquartile range (IQR) of each ensemble of 104 realizations, respectively. Structure factors [SFW, BW(ω), S0, 2ω], scattering field (ψsca) and scattering powers (PFW, BW) are normalized with δ2/ω0, δ and δ2, respectively, where δ = [C(0)]1/2.
