Fig. 2
From: Position-correlated biphoton wavefront sensing for quantum adaptive imaging
Experimental setup of PCB-SHWS. The laser passes through a beam shaping system (not shown) and pumps the BBO crystal. Degenerate collinear type-I down-converted photons from the BBO pass through the first Fourier lens L1, the half-wave plate (HWP), the object, and the second Fourier lens L2, and are reflected by the SLM. A plastic film may be pasted in front of the SLM. Then, they pass through a 4f system L3,L4 and is incident on the microlens array. An imaging lens L5 images the optical field at the microlens back focal plane to the EMCCD sensor. IF1: long-pass interference filter; IF2: bandpass filter. In the imaging experiment, the EMCCD sensor is moved to the image plane together with IF2 (see Supplementary Information 3 for the setup)
