Journey in quantum metrology and sensing from foundations to applications: a review

• URL: http://arxiv.org/abs/2605.21702v2
• Date: Mon, 25 May 2026 18:46:02 GMT
• Title: Journey in quantum metrology and sensing from foundations to applications: a review
• Abstract summary: We present a review on quantum metrology and sensing, from its foundations to current applications.<n>Highlights include consideration of both frequentist and Bayesian approaches to parameter estimation.<n> applications in diverse arenas covering quantum many-body sensors, sensing protocols in atomic ensembles, atom-photon systems, and continuous-variable systems.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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.

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