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- W3099854150 abstract "Entanglement witnesses are nonpositive Hermitian operators which can detect the presence of entanglement. In this paper, we provide a general parametrization for orthonormal basis of ℂ n and use it to construct projector-based witness operators for entanglement detection in the vicinity of pure bipartite states. Our method to parameterize entanglement witnesses is operationally simple and could be used for doing symbolic and numerical calculations. As an example we use the method for detecting entanglement between an atom and the single mode of quantized field, described by the Jaynes-Cummings model. We also compare the detection of witnesses with the negativity of the state, and show that in the vicinity of pure stats such constructed witnesses able to detect entanglement of the state." @default.
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- W3099854150 date "2009-12-16" @default.
- W3099854150 modified "2023-10-16" @default.
- W3099854150 title "Parametrization of Projector-Based Witnesses for Bipartite Systems" @default.
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- W3099854150 doi "https://doi.org/10.1007/s10773-009-0216-6" @default.
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