报告题目：Modal approach to multi-parameters estimation in optics and the example of incoherent sources

报告人：Prof. Nicolas Treps, Sorbonne University

报告时间：2025年8月9日（周六）下午16:45-18:00

报告地点：光电所二层报告厅

报告摘要：  

Quantum optical metrology aims at identifying the ultimate sensitivity bounds for the estimation of parameters encoded into an optical field. In many practical applications, such as imaging, microscopy, and remote sensing, the parameter of interest is encoded not only in the quantum state of the field but also in its spatio-temporal distribution, i.e., in its modal structure. In this context, we propose both a theoretical framework and an experimental approach to derive bounds and perform measurements that are quantum-optimal, either in the single or in the multi parameter settings. We illustrate this with the example of multi-parameter estimation on two incoherent sources.

报告人简介：

Nicolas Treps is a full professor at Sorbonne Université and the director of Laboratoire Kastler Brossel (LKB) in Paris. LKB is one of the major players in the field of quantum physics, covering a wide range of topics from fundamental tests of quantum physics to their applications. Nicolas Treps research interests are centered on quantum optics, both theoretical and experimental, and in particular the continuous variable approach and its applications to quantum technologies. He developed modal analysis of multimode quantum light, which lead to pioneering experiments on quantum metrology, quantum imaging and multimode quantum information. He co-funded the company Cailabs, that shapes laser light to enable faster, safer, more reliable and precise solutions, from industrial processes to data transmission, from Earth to Space. He is much involved in developing the quantum information ecosystem, being in charge of a quantum information master in Sorbonne, and at the board of the Parisian Center for Quantum Technologies.