2026-06-29T02:43:22Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/80862023-08-25T21:04:47Zcom_20.500.14352_14col_20.500.14352_15

Rotation sensing at the ultimate limit Goldberg, Aaron Z. Klimov, Andrei B. Leuchs, Gerd Sánchez Soto, Luis Lorenzo 535 Quantum sensing Estimation theory Rotation sensors Ultimate limits Óptica (Física) 2209.19 Óptica Física © 2021 The Author(s). We are indebted to G Björk, F Bouchard, C Chryssomalakos, M Grassl, P de la Hoz, E Karimi, and K Z˙ yczkowski for discussions.We acknowledge financial support from the European Union Horizon 2020 (Grants ApresSF and Stormytune), the Ministry of Education and Science of the Russian Federation (Mega-Grant No. 14.W03.31.0032), the Mexican CONACYT (Grant No. 254127), and the Spanish MINECO (Grant No. PGC2018-099183-B-I00). AZG acknowledges funding from an NSERC Discovery Award Fund, an NSERC Alexander Graham Bell Scholarship, the Walter C Sumner Foundation, the Lachlan Gilchrist Fellowship Fund, a Michael Smith Foreign Study Supplement, and Mitacs Globalink. Conventional classical sensors are approaching their maximum sensitivity levels in many areas. Yet these levels are still far from the ultimate limits dictated by quantum mechanics. Quantum sensors promise a substantial step ahead by taking advantage of the salient sensitivity of quantum states to the environment. Here, we focus on sensing rotations, a topic of broad application. By resorting to the basic tools of estimation theory, we derive states that achieve the ultimate sensitivities in estimating both the orientation of an unknown rotation axis and the angle rotated about it. The critical enhancement obtained with these optimal states should make of them an indispensable ingredient in the next generation of rotation sensors that is now blossoming. Unión Europea. Horizonte 2020 Ministerio de Economía y Competitividad (MINECO) Depto. de Óptica Fac. de Ciencias Físicas TRUE pub 2023-06-17T09:04:05Z 2023-06-17T09:04:05Z 2021-04 journal article https://hdl.handle.net/20.500.14352/8086 2515-7647 10.1088/2515-7647/abeb54 eng (STORMYTUNE (899587) ; ApresSF) PGC2018-099183-B-I00 Atribución 3.0 España https://creativecommons.org/licenses/by/3.0/es/ open access application/pdf IOP Publishing Ltd.