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Connecting measurement invasiveness to optimal metrological scenarios

Moreira, Saulo V.; Adesso, Gerardo; Correa, Luis A.; Coudreau, Thomas; Keller, Arne; Milman, P�rola

Authors

Saulo V. Moreira

Luis A. Correa

Thomas Coudreau

Arne Keller

P�rola Milman



Abstract

The connection between the Leggett-Garg inequality and optimal scenarios from the point of view of quantum metrology is investigated for perfect and noisy general dichotomic measurements. In this context, we show that the Fisher information can be expressed in terms of quantum temporal correlations. This connection allows us to associate scenarios with relatively high Fisher information to scenarios in which the Leggett-Garg inequality is violated. We thus demonstrate a qualitative and, to some extent, quantitative link between measurement invasiveness and metrological performance. Finally, we illustrate our results by using a specific model for spin systems.

Citation

Moreira, S. V., Adesso, G., Correa, L. A., Coudreau, T., Keller, A., & Milman, P. (2017). Connecting measurement invasiveness to optimal metrological scenarios. Physical Review A, 96(1), Article 012110. https://doi.org/10.1103/PhysRevA.96.012110

Journal Article Type Article
Acceptance Date Jun 15, 2017
Publication Date Jul 12, 2017
Deposit Date Jul 14, 2017
Publicly Available Date Mar 29, 2024
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 1094-1622
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 96
Issue 1
Article Number 012110
DOI https://doi.org/10.1103/PhysRevA.96.012110
Keywords Quantum foundations, Quantum measurements, Quantum metrology
Public URL https://nottingham-repository.worktribe.com/output/872532
Publisher URL https://doi.org/10.1103/PhysRevA.96.012110
Additional Information ©2017 American Physical Society

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