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- W2024789449 abstract "We report the implementation of two- and three-spin quantum erasers using nuclear magnetic resonance (NMR). Quantum erasers provide a means of manipulating quantum entanglement, an important resource for quantum information processing. Here, we first use a two-spin system to illustrate the essential features of quantum erasers. The extension to a three-spin ``disentanglement eraser'' shows that entanglement in a subensemble can be recovered if a proper measurement of the ancillary system is carried out. Finally, we use the same pair of orthogonal decoherent operations used in quantum erasers to probe the two classes of entanglement in tripartite quantum systems: the Greenberger-Horne-Zeilinger state and the W state. A detailed presentation is given of the experimental decoherent control methods that emulate the loss of phase information in strong measurements, and the use of NMR decoupling techniques to implement partial trace operations." @default.
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- W2024789449 date "2002-07-24" @default.
- W2024789449 modified "2023-09-23" @default.
- W2024789449 title "Quantum erasers and probing classifications of entanglement via nuclear magnetic resonance" @default.
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- W2024789449 doi "https://doi.org/10.1103/physreva.66.012309" @default.
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