ArticleScientific reports2017
Investigating quantum metrology in noisy channels.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Quantum coherence in three-level systems under the combined effect of stark effect and non-linear Kerr medium.Scientific reports · 2025Article
- Examining the quantum fisher information in the interaction of a dirac system with a squeezed generalized amplitude damping channel.Scientific reports · 2024Article
- Scrutinizing joint remote state preparation under decoherence.Scientific reports · 2023Article
- Fundamental noisy multiparameter quantum bounds.Scientific reports · 2019Article
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Authors and funding
8 authors.
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Abstract
Quantum entanglement lies at the heart of quantum information and quantum metrology. In quantum metrology, with a colossal amount of quantum Fisher information (QFI), entangled systems can be ameliorated to be a better resource scheme. However, noisy channels affect the QFI substantially. This research work seeks to investigate how QFI of N-qubit Greenberger-Horne-Zeilinger (GHZ) state is affected when subjected to decoherence channels: bit-phase flip (BPF) and generalize amplitude damping (GAD) channels, which can be induced experimentally. We determine the evolution under these channels, deduce the eigenvalues, and then derive the QFI. We found that when there is no interaction with the environment, the Heisenberg limit can be achieved via rotations along the z direction. It has been shown that in BPF channel, the maximal mean QFI of the N-qubit GHZ state ([Formula: see text]) dwindles as decoherence rate (p
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