Quantum Fisher information of multi-qubit WV entangled state under Lipkin-Meshkov-Glick model
Yan Li,
Zhi-Hong Ren
Abstract:As an important quantity in the field of parameter estimation theory and quantum precision measurement, quantum Fisher information (QFI) can not only be used to set the theoretical limit of measurement precision in quantum system, but also be exploited to witness metrological useful quantum entanglement. Recently, it has also been broadly used in many aspects of quantum information science, including quantum metrology, multipartite entanglement structure detection, quantum phase transition, quantum chaos, quan… Show more
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