Fig. 2 | Nature Communications

Fig. 2

From: Quantum wave mixing and visualisation of coherent and superposed photonic states in a waveguide

Fig. 2

Dynamics of coherent wave mixing. a An example of a spectrum of scattered microwaves, when two simultaneous periodic pulses of equal amplitudes and frequencies ω and ω + are applied according to the top time diagram. The mixing of coherent fields \({\left| \alpha \right\rangle _ \pm }\), consisting of an infinite number of photonic states results in the symmetric spectrum with an infinite number of side peaks, which is the map of classical states. b Four panels demonstrate anharmonic Rabi oscillations of the peaks at frequencies ω 0 + (2k + 1)δω. The measured data (dots) are fitted by squares of 2k + 1-order Bessel functions of the first kind (solid lines). The orders are equal to the interacting photon numbers

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