Journey in quantum metrology and sensing from foundations to applications: a review
Abstract
We present a review on quantum metrology and sensing, from its foundations to current applications. Highlights of the review include consideration of both frequentist and Bayesian approaches to parameter estimation; single as well as multiparameter estimation; estimation for different encoding processes comprising unitary as well as noisy channels, quantum thermometry, and channels involving indefinite causal order; different estimation strategies incorporating also recent advances like quantum error correction-aided methods and reservoir engineering; usefulness of quantum Fisher information to detect resources; applications of quantum metrology in diverse arenas covering quantum many-body sensors, sensing protocols in atomic ensembles, atom-photon systems, and continuous-variable systems, quantum imaging, quantum illumination, atomic clocks and atom interferometry, etc; and experimental realizations of quantum sensors in different physical platforms.
Keywords
Cite
@article{arxiv.2605.21702,
title = {Journey in quantum metrology and sensing from foundations to applications: a review},
author = {Priya Ghosh and Tanoy Kanti Konar and Debraj Rakshit and Aditi Sen De and Ujjwal Sen},
journal= {arXiv preprint arXiv:2605.21702},
year = {2026}
}
Comments
v1: 93 pages, 16 figures, review article; v2: Minor changes and an updated version will follow soon