Extended Data Fig. 1: IR spectra.

Measured IR spectra of the different bichromatic probe pulses used in the experiments in (a) helium and (b) argon. For the sake of visibility the different spectra are shifted vertically.
Measured IR spectra of the different bichromatic probe pulses used in the experiments in (a) helium and (b) argon. For the sake of visibility the different spectra are shifted vertically.