Speaker: Manuel Gessner
Affiliation: Universitat de Valencia
Date: Thursday, 20 July 2023 at 12:00
Location: Online seminar
Quantum metrology develops techniques that improve the measurement resolution of parameters encoded in quantum states. The quantum states of light or of trapped atomic ensembles are defined not only by the quantum state itself, but also by the shape of the modes that this state occupies. Parameters that determine a quantum optical mode include the spatial and temporal shape as well as the frequency spectrum. The estimation of these parameters is of high interest for applications in imaging, timing, positioning, and precision spectroscopy. In this talk we present a quantum theory for the estimation of mode parameters. We demonstrate that the population of suitably designed modes with nonclassical states enables quantum enhancements for the estimation of arbitrary mode parameters. We discuss applications of our results in the context of superresolution imaging and displacement sensing.