Fig. 3: Comparison of superabsorption and ordinary absorption.
From: Realization of superabsorption by time reversal of superradiance
a, The number of the absorbed photons per atom for a time interval Δt = τ in superabsorption (red) and ordinary absorption (blue). Solid symbols represent experimental data at gτ = 0.16, whereas hollow symbols correspond to those at gτ = 0.10. Solid lines are theoretical expectations given by Supplementary Equation 20a,b. b, The ratio of the effective optical depths as a function of N. The squares represent experimental data, whereas the solid line represents the approximation by Supplementary Equation 19. The approximation is valid for N ≫ 1; n0 = 1.0. The effective optical depth for superabsorption is much larger than that of the ordinary absorption and the ratio scales with N. The error bars indicate standard deviations from repeated measurements.
