Fig. 7: On-demand microwave state storage and tomography in the time domain.
a Scatter plots of the measured quadratures of motion with coherent input signals for different evolution times τ = 0.01, 1, 10, 80s. One pulse-sequence measurement yields a point (blue dot) in the quadrature phase space. Each figure in a is obtained by repeating the pulse-sequence measurements 3000 times. The offset of the center of the scatter plot relative to the origin of the coordinates represents the component of the coherent excitations Ncoh. b The coherent and thermal components of the retrieved microwave pulse after a storage time of τ. The green triangles (red dots) are experimental data of thermal (coherent) occupation \({N}_{{{{\rm{th}}}}}^{\tau }\) (Ncoh) with error bars. At the same time, the solid lines are the corresponding exponential fit. c The phases of input signal pulses in the protocol of recovered microwave pulse with a phase increment of π/2.
