Experimental results of the interference patterns of the MZ interferometer with coherent excited two-mode squeezed states. Panel (a) is the input relative phases θ = 0° and panel (b) is the evolutionary of the output quantum states in phase space as the function of the relative phase ϕ of two arms of the interferometer, corresponding to panel (a). Panel (c) is for 90° and panel (d) is the quantum state evolution in phase space corresponding to panel (c). Panel (e) is noise trace of the MZ interferometer with an input coherent state and an input vacuum state and panel (f) is the state evolution in phase space corresponding to panel (e).