Typicality of Heisenberg scaling precision in multimode quantum metrology
Giovanni Gramegna, Danilo Triggiani, Paolo Facchi, Frank A. Narducci, Vincenzo Tamma · Physical Review Research · 2021
This work proposes a Gaussian metrological setup for Heisenberg-scaling precision in the estimation of a parameter embedded in an arbitrary linear passive network. The authors show that the sensitivity becomes typical for large interferometers.