2021/01/01 by Z. Hradil, Hradil, Zdeněk, Dominik Koutný +3 · 2 citations
Physics and Astronomy · Biochemistry, Genetics and Molecular Biology · #Spectroscopy and Quantum Chemical Studies #Laser-Matter Interactions and Applications #Spectroscopy Techniques in Biomedical and Chemical Research
paper · pdf · doi:10.48550/arxiv.2103.07225
The resolution of separation of two elementary signals forming a partially\ncoherent superposition, defined by quantum Fisher information and normalised\nwith respect to detection probabilities, is always limited by the resolution of\nincoherent mixtures. However, when the partially coherent superpositions are\nprepared in a controlled way the precision can be enhanced by up to several\norders of magnitude above this limit. Coherence also allows the sorting of\ninformation about various parameters into distinct channels as demonstrated by\nparameter of separation linked with the anti-phase superposition and the\ncentroid position linked with the in-phase superposition.\n