Fig. 2: Measurements of strong coherent states.
a Measured electric fields of coherent states consisting of a large number of photons. b Central part of the pulse (\(\left\langle n\right\rangle\) = 6.42 x \({10}^{6}\)) from the panel (a) showing clear electric field oscillations with high fidelity. c Benchmarking of the measured (blue dots) spectrum obtained by a Fourier transformation against a grating spectrometer (red curve). d Dependence of the measured signal (\(\bar{{\rm{S}}}\)) on the electric field strength of the test pulse. e Dependence of the measured standard deviation (σ) on the electric field strength of the test pulse. f Dependence of the measured signal (\(\bar{{\rm{S}}}\)) on the electric field strength of the sampling pulse
