2019/11/30 by Francesco Albarelli, Marco Barbieri, Marco G. Genoni +1 · 6 citations
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1016/j.physleta.2020.126311
published as Phys. Lett. A 384, 126311 (2020) · 14 pages, 1 figure. Comments are welcome
arxiv created 2020/06/19 · arxiv updated 2020/06/22
The interest in a system often resides in the interplay among different parameters governing its evolution. It is thus often required to access many of them at once for a complete description. Assessing how quantum enhancement in such multiparameter estimation can be achieved depends on understanding the many subtleties that come into play: establishing solid foundations is key to delivering future technology for this task. In this article we discuss the state of the art of quantum multiparameter estimation, with a particular emphasis on its theoretical tools, on application to imaging problems, and on the possible avenues towards the next developments.