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- W3208994643 abstract "In this paper, we investigate the quantum coherence extraction for two accelerating Unruh-DeWitt detectors coupling to a scalar background in $3+1$ Minkowski spacetime. We find that quantum coherence as a sort of nonclassical correlation can be generated through the Markovian evolution of the detectors system just like quantum entanglement. However, with growing Unruh temperature, in contrast to monotonous degrading entanglement, we find that quantum coherence exhibits a striking revival phenomenon. That is, for certain choice of detectors' initial state, coherence measure will reduce to zero firstly then grow up to an asymptotic value. We verify such coherence revival by inspecting its metrological advantage on enhancing the quantum Fisher information (QFI). Since the maximal QFI bounding the accuracy of a quantum measurement, we conclude that the extracted coherence can be utilized as a physical resource in quantum metrology." @default.
- W3208994643 created "2021-11-08" @default.
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- W3208994643 date "2021-11-01" @default.
- W3208994643 modified "2023-09-24" @default.
- W3208994643 title "Coherence revival and metrological advantage for moving Unruh-DeWitt detector" @default.
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- W3208994643 doi "https://doi.org/10.48550/arxiv.2111.01358" @default.
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