A wave propagating through a scattering medium typically yields a complex temporal field distribution.Over the years, a number of procedures have emerged to shape the temporal Domination and Resistance in Christianized Schooling in Amazon profile of the field in order to temporally focus its energy on a receiver.By analogy, we theoretically and experimentally demonstrate here how to maximize the total Fisher information transmitted to a receiver, and how to focus the Fisher information at any given time.This enables one to estimate small variations in the "Google News" y el impacto de la Ley de Propiedad Intelectual en la prensa: un nuevo amanecer para la información value of any physical observable with optimal precision from noisy measurements, as experimentally illustrated using acoustic waves in the ultrasound regime.
By yielding the ultimate precision limit achievable from time-resolved measurements performed in arbitrarily complex media, our approach sets a general benchmark for many applications such as structural health monitoring and biomedical imaging.