Experimental multiparameter quantum metrology in adaptive regime
Abstract
Relevant metrological scenarios involve the simultaneous estimation of multiple parameters. The fundamental ingredient to achieve quantum-enhanced performances is based on the use of appropriately tailored quantum probes. However, reaching the ultimate resolution allowed by physical laws requires non trivial estimation strategies both from a theoretical and a practical point of view. A crucial tool for this purpose is the application of adaptive learning techniques. Indeed, adaptive strategies provide a flexible approach to obtain optimal parameter-independent performances, and optimize convergence to the fundamental bounds with limited amount of resources. Here, we combine on the same platform quantum-enhanced multiparameter estimation attaining the corresponding quantum limit and adaptive techniques. We demonstrate the simultaneous estimation of three optical phases in a programmable integrated photonic circuit, in the limited resource regime. The obtained results show the possibility of successfully combining different fundamental methodologies towards transition to quantum sensors applications.
Cite
@article{arxiv.2208.14473,
title = {Experimental multiparameter quantum metrology in adaptive regime},
author = {Mauro Valeri and Valeria Cimini and Simone Piacentini and Francesco Ceccarelli and Emanuele Polino and Francesco Hoch and Gabriele Bizzarri and Giacomo Corrielli and Nicolò Spagnolo and Roberto Osellame and Fabio Sciarrino},
journal= {arXiv preprint arXiv:2208.14473},
year = {2023}
}