Matches in SemOpenAlex for { <https://semopenalex.org/work/W2258238025> ?p ?o ?g. }
- W2258238025 abstract "Time is a valuable resource and it is expected that a longer time period should lead to better precision in Hamiltonian parameter estimation. However, recent studies in quantum metrology have shown that in certain cases more time may even lead to worse estimations, which puts this intuition into question. In this Letter we show that by including feedback controls this intuition can be restored. By deriving asymptotically optimal feedback controls we quantify the maximal improvement feedback controls can provide in Hamiltonian parameter estimation and show a universal time scaling for the precision limit under the optimal feedback scheme. Our study reveals an intriguing connection between noncommutativity in the dynamics and the gain of feedback controls in Hamiltonian parameter estimation." @default.
- W2258238025 created "2016-06-24" @default.
- W2258238025 creator A5031129014 @default.
- W2258238025 creator A5048345090 @default.
- W2258238025 date "2015-09-08" @default.
- W2258238025 modified "2023-10-15" @default.
- W2258238025 title "Optimal Feedback Scheme and Universal Time Scaling for Hamiltonian Parameter Estimation" @default.
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- W2258238025 doi "https://doi.org/10.1103/physrevlett.115.110401" @default.
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