Fig. 2: Comparison of phase-retrieval problems with different number of phase masks.
From: Phase retrieval via gain-based photonic XY-Hamiltonian optimization

a Time evolution of errors for the phase-retrieval problem under the CDP experiment framework with L = 2 phase masks. The inset gives the final reconstructed image produced by the phase-retrieval algorithm. b Time evolution of errors for the phase-retrieval problems with 5 phase masks. In both cases, the problems were solved with the gain-dissipative system with a random initial condition. The original image, which is visually identical to the image shown in the inset of (b), is from the labeled face in the wild (LFW) dataset51. See table “Fig. 2” in supplementary data.