Detecting momentum weak value: Shack–Hartmann versus a weak measurement wavefront sensor
Detecting momentum weak value: Shack–Hartmann versus a weak measurement wavefront sensor
The task of wavefront sensing is to measure the phase of the optical field. Here, we demonstrate that the widely used Shack-Hartmann wavefront sensor detects the weak value of transverse momentum, usually achieved by the method of quantum weak measurement. We extend its input states to partially coherent states and …