Are existing detectors anywhere near the theoretical limit? Is the improvement 1%? 1,000%? Or is this like 'galactic' matrix multiplication algorithms which a

Are existing detectors anywhere near the theoretical limit? Is the improvement 1%? 1,000%? Or is this like 'galactic' matrix multiplication algorithms which are infeasible in real-world scenarios? I cannot tell from the abstract, and don't know why you posted it here.