Coherence effects on estimating general sub-Rayleigh object distribution moments

Quantum Fisher information and signal-to-noise ratio bounds are derived for the estimation of moments of general partially coherent objects. Under an asymptotic analysis in the sub-Rayleigh regime, these bounds are shown to be less restrictive than those of the incoherent case. This leaves open the possibility of more accurately estimating object distribution moments when the object is partially coherent.

Automated summary

Quantum Fisher information and signal-to-noise ratio bounds are derived for estimating moments of partially coherent objects, showing less restrictive bounds in the sub-Rayleigh regime compared to the incoherent case. This opens up the possibility of more accurate estimation of object distribution moments when the object is partially coherent.