Fig. 3: Dependence of efficiency and noise on the control power.
From: Fast, noise-free atomic optical memory with 35-percent end-to-end efficiency
a The memory efficiency at a storage time of 20 ns. Note that here and in Fig. 4, the ηe2e axis refers to the end-to-end efficiency of the on-resonance storage; the off-resonance storage efficiency is 15% lower due to absorption by residual 85Rb atoms. b The mean number of noise photons per retrieved pulse. The lines are a linear fit. Results are shown for (green) on-resonance storage and (orange) off-resonance, both with the dressing field. In (a, b) the error bars are the standard deviation of the mean of repeated measurements.
