Quantum multiphase estimation

Year: 2024

Authors: Barbieri M., Gianani I., Goldberg A.Z., Sbnchez-Soto L.L.

Autors Affiliation: Univ Studi Roma Tre, Dipartimento Sci, Rome, Italy; CNR, Ist Nazl Ott, Florence, Italy; Natl Res Council Canada, Ottawa, ON, Canada; Univ Complutense, Fac Fis, Dept Opt, Madrid, Spain; Max Planck Inst Phys Lichts, Erlangen, Germany; Chapman Univ, Inst Quantum Studies, Orange, CA 92866 USA.

Abstract: Quantum phase estimation is fundamental to advancing quantum science and technology. While much of the research has concentrated on estimating a single phase, the simultaneous estimation of multiple phases can yield significantly enhanced sensitivities when using specially tailored input quantum states. This work reviews recent theoretical and experimental advancements in the parallel estimation of multiple arbitrary phases. We highlight strategies for constructing optimal measurement protocols and discuss the experimental platforms best suited for implementing these techniques.

Journal/Review: CONTEMPORARY PHYSICS

Volume: 65 (2)      Pages from: 112  to: 124

More Information: This work was supported by the European Commission FET- OPEN-RIA project STORMYTUNE (Grant Agreement No. 899587), Ministero dell’University e della Ricerca Dipartimento di Eccellenza 2023-2027, Research Projects of National Relevance (Grant PRIN22-RISQUE-2022T25TR3) and Agencia Estatal de Investigacion (Grant PID2021-127781NB-I00). L.L.S.S. was supported in part by the grant NSF PHY-1748958 to the Kavli Institute for Theoretical Physics (KITP). A.Z.G. acknowledges that the NRC headquarters is located on the traditional unceded territory of the Algonquin Anishinaabe and Mohawk people, as well as support from the NRC Quantum Sensors Challenge program.
KeyWords: Metrology; multiparameter quantum estimation; ultimate quantum limits
DOI: 10.1080/00107514.2025.2469974